A court has heard two men being tried for the murder of 17-year-old Daniel McAnaspie each claimed to have witnessed the other man carrying out the stabbing.

Trevor Noone and Richard Dekker, from Whitestown Avenue in Blanchardstown deny killing the teenager who was in the care of the Health Service Executive, at Tolka Valley Park on February 26th 2010.

The trial opened this afternoon. The jury has heard after a night out with friends Daniel was last seen in Blanchardstown with the 2 accused men.

When arrested Trevor Noone told gardai that Richard Dekker had laughed as he stabbed the teenager who had pleaded 'Sorry, give me another chance'.

However Richard Dekker gave a different account to gardai claiming that he had been the bystander while Noone had attacked the teenager over some previous fight.

The jury heard there will be evidence both men identified an isolated spot in a park by the Tolka River as the murder scene.

The prosecution say the weapon used could have been part of a garden shears found discarded in the river.

The badly decomposed body of Daniel McAnaspie was found by a farmer in Co. Meath nearly 3 months after his disappearance.