The prosecutor has sought a charge of "aggravated life in prison" for Murat Karatas, the 38-year-old suspected murderer.
Bacca's mother, Elena Manzoni said she had full confidence in the Turkish judicial system, after attending the first hearing at the High Criminal Court No:1 of Kocaeli.
Bacca departed from the Italian city of Milan together with Silvia Moro, an artist friend, on March 8. The two artists were hitchhiking to the Israeli city of Tel Aviv with the aim of sending a "peace message" to the world.
Pasqualino and Moro separated from each other in Istanbul on March 19. After March 31, no contact could be established with Pasqualino. The 33-year-old artist was found dead in a forest near the town of Gebze in the northwestern province of Kocaeli on April 12.