The Ana Kriegel trial has heard one of two boys accused of her murder told Gardaí she started crying when the other boy flipped her onto the ground.
Both boys deny murdering the 14-year-old at an abandoned farmhouse in Dublin on May 14th last year.
In his fifth interview with Gardaí, Boy B said he saw Boy A putting his arm around Ana in the derelict farmhouse in Lucan where her body was found on May 17th last year - three days after her mother reported her missing.
He claimed Boy A, who was also 13-years-old at the time, started to choke her and he said he instantly knew what was happening and he was "in shock".
He told them his co-accused was undressing her when he looked around at him standing in the doorway.
He said he just sprinted away at that point.
He said Ana was crying a bit when she was "flipped" onto the ground and kept saying: "No, no - don't do this".
He also told them his friend's bag was in the corner of the room but he said he did not know what was in it.
He was also told that Ana had been sexually assaulted, but he said he did not know anything about that.
The jury has now begun watching videos of his interviews with Gardaí following his re-arrest six weeks later.
Reporting from Frank Greaney at the Central Criminal Court