A federal judge will decide whether to throw out the confession of the soldier accused in a bomb plot on Fort Hood troops.

Army Pfc. Naser Jason Abdo's attorneys have filed motions to be heard Friday at a hearing in Waco federal court. One seeks to suppress evidence obtained when Abdo was arrested in July at a Killeen motel near the Texas Army post.

His attorneys claim investigators denied him access to a lawyer and did not read his Miranda rights before he told of plans to bomb a restaurant filled with Fort Hood troops.

Abdo was AWOL from Fort Campbell, Ky. He faces up to life in prison if convicted of attempting to use a weapon of mass destruction and eight other charges. His trial is set for May.