The jurors in David Mahon’s murder trial have heard he called Gardai to say: “it was me that did it” after he found out his stepson was dead.

The 46-year-old has pleaded not guilty to the murder of Dean Fitzpatrick at his apartment in Northern Cross, Malahide in Dublin in May 2013.

During his first interview, Mr. Mahon claimed Dean pulled a knife on him and ran into it after he took it from him.

The court heard he was very upset, and told them they argued a lot and that Dean had once pulled a gun on him.

Earlier, the Deputy State Pathologist Dr. Michael Curtis said he wasn’t able to confirm whether it was an “accidental run-on or deliberate thrust.”