There has been a delay in the start of a trial for three teenagers charged with a shooting on a central Alberta reserve that killed a five-year old boy as he slept in his bed.

The Crown has asked the judge to adjourn the hearing until this afternoon while the prosecution and the defence have some discussions.

Ethan Yellowbird was killed in a home on the Samson Cree First Nation in Hobbema on July 11, 2011.

A bullet fired from outside his bedroom wall struck him in the head.

The accused boys -- who were 13, 16 and 17 at the time of the shooting -- each face charges of manslaughter, aggravated assault and intentional discharge of a firearm.

They can't be named under the Youth Criminal Justice Act.