Singer Gül Tut, known as Güllü, died on September 26, 2025, by falling from the window of her house on the terrace floor of a 6-storey building in Harmanlar District of Çınarcık district. Following the incident, within the scope of the investigation initiated by the Yalova Chief Public Prosecutor's Office, action was taken against the artist's daughter Tuğyan Ülkem Gülter and her friend Sultan Nur Ulu, who was with her during the incident. At the end of the investigation, aggravated life imprisonment was requested for Tuğyan Ülkem Gülter for the crime of "premeditated murder against the superior lineage". In the case heard at Yalova 1st High Criminal Court, detained Gülter was sentenced to aggravated life imprisonment for "intentional murder against the gentry" on October 9, 2026.
TWO SEPARATE EXPERT REPORTS WERE PREPARED
Regarding the incident in which Güllü lost his life, his son Tuğberk Yağız Gülter's lawyers, Rahmi Çelik and Mert Erdoğan, prepared two separate audio investigation reports regarding in-home security camera footage. The scientific opinion report dated October 28, 2026 was prepared by a forensic audio and video examination expert, forensic science expert, and forensic and criminalistic examination expert upon the request of the lawyers. The second expert opinion was held on November 6 by Mustafa Arapoğlu, a sound engineer and working in the field of music production.
THE WORDS 'I TURNED THE CAMERAS OFF' ARE IN THE RECORDING
In the report prepared by Mustafa Arapoğlu, the conversations were listed with time stamps in minutes and seconds. According to the recording transcript, after the phrase "How are you?" attributed to Tuğyan Ülkem Gülter at 1 minute and 2 seconds, "Bro, I turned off the cameras" at 1 minute and 4 seconds, and "I turned off the cameras" at 1 minute and 8 seconds. At 1 minute and 51 seconds of the recording, the statement attributed to Tuğyan read: "He wanted Malkata." After the words "I'll throw it like that", it was recorded that the Sultan responded by saying "How so?" at 1 minute and 53 seconds.
It was stated that Tuğyan said "I am thinking about how to do it" at 1 minute and 54 seconds, and Sultan Nur Ulu said "Go get it" at 1 minute and 57 seconds. In the transcript, it was seen that at 2 minutes and 32 seconds, the male voice said, "Do you think he is trying to scare you?" and Sultan said, "He is trying to scare" at 2 minutes and 33 seconds.
At 3 minutes and 5 seconds of the recording, the words "I swear he won't go down" were attributed to Güllü, and at 3 minutes and 8 seconds, the words "Look at the maniacs" were included. It was recorded that at 3 minutes and 18 seconds, Tuğyan said 'Come, come', and at 3 minutes and 21 seconds, Güllü called out 'Girl, come here' and the song was accompanied by the song.
THERE WAS A CLAIM IN THE RECORDINGS THAT SULTAN SAID 'HORSE'
In the report, it was stated that at 3 minutes and 40 seconds, the words "Wasn't he letting go of your hand?" attributed to Tuğyan were followed by the words "Let me go" attributed to Güllü at 3 minutes and 41 seconds. It was reported that in the continuation of the same conversation, the word 'Leave' was recorded at 3 minutes and 45 seconds. In the transcript, it was stated that at 3 minutes and 49 seconds, Tuğyan said, "Shut up, girl." After the words "He's watching me, he's watching me" attributed to Sultan at 4 minutes 2 seconds, it was recorded that Tuğyan laughed at 4 minutes 5 seconds, and Sultan said "Horse" at 4 minutes 8 seconds. At 4 minutes 29 seconds of the recording, the words "Apologise" attributed to Tuğyan were included, and at 4 minutes 31 seconds, the words "Pick up the phone" were included. It was stated that Tuğyan said 'Jump out of the window' at 4 minutes 56 seconds, 'Hungry dog' at 4 minutes 58 seconds, 'Mom, look' at 5 minutes and 'Hungry' at 5 minutes 2 seconds.
In the last part of the audio transcript, it was reported that there was an insult attributed to Güllü at 5 minutes and 10 seconds, and Tuğyan's laughing voice at 5 minutes and 11 seconds. Following the 'Ah' sound attributed to Güllü at 5 minutes and 22 seconds of the recording, impact sounds were recorded at 5 minutes, 24 and 26 seconds. At 5 minutes and 29 seconds, the words "Run, I don't have a mother, run" attributed to Tuğyan were included in the report.
20 VOICE RECORDINGS WERE EXAMINED IN THE SECOND REPORT
In the report dated October 28, 2026, prepared by a forensic audio and video examination expert, a forensic science expert, and a forensic and criminalistic examination expert, it was stated that 20 1-minute voice recordings and the recordings containing Güllü's voice in the portable memory within the scope of the file were examined. It was noted that no direct changes were made in order to preserve the integrity of the original records, and the analyzes were carried out through copies. It was stated that auditory analysis, acoustic and spectrographic analysis, and noise removal and filtering methods were used in the investigation in line with international forensic sound examination standards. Striking statements were also listed in the transcription section of the second report. At 2 minutes and 52 seconds of the recording, there were the words "Is everyone okay?" attributed to Güllü, at 2 minutes 55 seconds, the words "Everyone is okay" in a low voice attributed to Tuğyan, and at 2 minutes and 57 seconds, "What the hell is that?", attributed to Güllü.
In the report, the words "I swear he won't come down" were recorded at 3 minutes 5 seconds, "Look at the maniacs" at 3 minutes 8 seconds, "Oh donkey" at 3 minutes 14 seconds, "Come on" at 3 minutes 18 seconds, and "Girl come here" at 3 minutes 21 seconds. The phrases 'Leave me' attributed to Güllü at 3 minutes 41 seconds and 'Leave me' at 3 minutes 45 seconds were also included in the transcript. The speech at 4 minutes and 2 seconds was written with two different possibilities as "What is he pushing / what is he watching - he is pushing me / he is watching me". In the report, the speaker of these words was stated as Tuğyan or Sultan. In the continuation of the recording, there were the words 'No' attributed to the male voice at 4 minutes 25 seconds, 'I don't want to see' at 4 minutes 27 seconds, 'Apologize' attributed to Tuğyan at 4 minutes 30 seconds, and 'I want him to see' attributed to the Sultan at 4 minutes 35 seconds. At 4 minutes 57 seconds, the expressions "Jump from the window" attributed to a male voice, at 4 minutes 58 seconds, "Hungry dog, get out" attributed to Tuğyan, at 5 minutes 1 second, "Let my mother throw it" and at 5 minutes 2 seconds, "Mom, look, throw it away" were recorded. In the last part of the second report, it was stated that there was a crash and a bolt sound at 5 minutes and 24 seconds, and a crash and an 'ah' sound at 5 minutes and 26 seconds. It was recorded that the words 'Run' attributed to Tuğyan at 5 minutes 29 seconds, 'My mother jumped' at 5 minutes 31 seconds were followed by the words 'Tuğyan' attributed to Çiğdem at 5 minutes 47 seconds, and 'Dude, you...' at 5 minutes 54 seconds. The report stated that the recording ended with Tuğyan shouting 'Mom, mom' and screaming sounds.
CLAIM OF A MALE VOICE IN THE RECORDINGS
The report also drew attention to the conversations stated to be male voices in the audio recording. In the first expert opinion, it was stated that the recording included the following statements: "He came back from the bathroom?" at 2 minutes and 25 seconds, "Something in the environment" at 2 minutes and 27 seconds, and "Do you think he is trying to scare you?" at 2 minutes and 32 seconds. The words 'Close the door' were recorded at 4 minutes 20 seconds of the recording, 'No honor' at 4 minutes 47 seconds, 'Throw it away' at 4 minutes 54 seconds and 'I'm closed' at 5 minutes 9 seconds. In the other expert report, the expressions 'No' at 4 minutes 25 seconds, 'I don't want to see' at 4 minutes 27 seconds, and 'Jump out of the window' at 4 minutes 57 seconds, attributed to the male voice, were included. There was no identification in the reports as to who the male voices belonged to.
DNA EXAMINATION RECOMMENDATION FOR CIGARETTE BUTTS
In the conclusion of the second expert opinion, it was emphasized that the technical examination of the voice recordings was important in clarifying the incident, but that it alone could not reveal the exact manner in which the incident occurred. The report stated that the wound behind Güllü's ear, the cigarette butt reportedly found at the scene, previous expert reports and other material evidence in the file should be evaluated together. In particular, it was recommended that the cigarette butt be examined for DNA analysis if deemed appropriate, taking into account the chain of evidence, storage conditions and the possibility of contamination. It was stated that it is important for experts to evaluate the mechanism of the wound behind the ear and its relationship with the process of the incident. Experts stated that the reports only included the technical and acoustic analysis of the sound recordings, and that the final discretion regarding the exact manner in which the incident occurred and the legal responsibilities of the individuals belonged to the court.
A NEW CRIMINAL COMPLAINT HAS BEEN FILED
Along with these reports, Tuğberk Yağız Gülter's lawyers Rahmi Çelik and Mert Erdoğan filed a criminal complaint with the Yalova Chief Public Prosecutor's Office against Sultan Nur Ulu and Tuğyan Ülkem Gülter's ex-fiancée Kervan Eminoğlu, alleging that they participated in the murder. In the criminal complaint, it was stated that the male voice in the reports may belong to Kervan Eminoğlu.
