The head of investigations at the Turkish Daily Sabah newspaper has told Al Jazeera that Jamal Khashoggi's last words were "I'm suffocating ... Take this bag off my head, I'm claustrophobic", according to an audio recording from inside the Saudi consulate in Istanbul.

Khashoggi, a Saudi journalist, suffocated to death while a plastic bag covered his head, Nazif Karaman told Al Jazeera.

Karaman said the murder lasted for about seven minutes, according to the recordings.

Turkish President Recep Tayyip Erdogan said on Saturday that audio related to Khashoggi's murder was shared with Saudi Arabia, the United States, Germany, France and Britain.

Erdogan yesterday discussed with US President Donald Trump how to respond to the killing, a White House official said yesterday. Trump expects to form a "much stronger opinion" by next week on Khashoggi's killing and Washington's response, he said on Nov 7.

According to Karaman, the Saudi entourage covered the floor with plastic bags before dismembering Khashoggi's body - a 15-minute process that was led by Salah al-Tubaigy, head of the Saudi Scientific Council of Forensics.

Traces of acid were found at the Saudi consul general's residence in Istanbul, where the body was believed to be disposed of with the use of chemicals.

Karaman said that Daily Sabah would publish some of the recordings that document the last moments of Khashoggi's life.

Khashoggi, a critic of ruling Saudi Crown Prince Mohammed bin Salman, was murdered at the kingdom's Istanbul consulate by a team sent from Riyadh on October 2. Saudi authorities have acknowledged that the killing was premeditated, but his body has not been found.