POLICE AMBUSHED - PITTSBURGH, PA- APRIL 4, 2009

Deadly ambush in Stanton Heights, a suburb of Pittsburgh, claims the lives of 3 city police officers.

Within minutes, all three officers were fatally shot by the subject of a domestic all, later identified as Richard "Pop" Poplawski, 22. A discharged Marine, he adhered to a number of right-wing conspiracy theories and expressed fears of a "Zionist nation" revoking his right to own guns.

Police said Mr. Poplawski knew his mother had called 911 and knew officers would come to his house. Wearing a bulletproof vest, he apparently lay in wait, heavily armed with an AK-47 assault-style rifle, a .22-caliber rifle and a revolver.

After a four hour siege and although wounded, he was apprehended after police negotiators convinced Poplawski to give himself up.

ABC News Correspondent, Rachel Martin and Vija Udenans, Producer came in from Washington to cover the story. Ben Popio and Don Yost along with Jim Massaro provided the Live coverage.