A lawyer for the man charged in a deadly ambush outside a Pennsylvania State Police barracks wants statements he made during interrogation suppressed.

Attorney William Ruzzo is also challenging a prosecutor's decision to seek the death penalty against Eric Frein (freen).

Frein was captured near an abandoned airplane hangar after a 48-day manhunt following the September 2014 shooting that left Cpl. Bryon Dickson dead and Trooper Alex Douglass wounded. He has pleaded not guilty.

In a motion filed in Pike County Court on Tuesday, Ruzzo says Frein's rights were violated during questioning because, among other things, he wasn't told a lawyer hired by his parents was waiting to see him.

Ruzzo also filed a motion saying the death penalty is unconstitutional.