The prosecution case was based, in part, on footage from MTV which was recorded in Derry on the day of the murder.
However, the MTV camera crew had left the scene before the shooting took place.
During the trial, footage was shown, including conversations between MTV presenter Reggie Yates and a number of the defendants.
The prosecution suggested that the disorder which broke out had been deliberately orchestrated by dissident republicans to coincide with the presence of MTV.
In the public gallery, friends and relatives of the accused sat on one side, while friends and relatives of Lyra sat on the other.
Sara Canning, who was Lyra’s partner, was seated on the front row as the judge delivered her verdicts, but left before the end of the hearing.
The non-jury trial opened in May 2024 and ended this April. It was one of the longest in recent times in Northern Ireland.
The three men accused of murder denied all of the charges against them. They chose not to give evidence during the trial.
The judge, Mrs Justice Smyth, reserved her judgement to give “proper consideration” to all the points that had been made in the case.