Hundreds of investigators continue to search for the reason why a 23-year-old Austin man went on a deadly bombing spree.
Mark Conditt left a recorded twenty-five minute long confession on his cell phone, though it has yielded more questions than answers.
Investigators say Conditt called himself a "psychopath" and said he felt no remorse for the explosions that killed two people and terrorized the Austin metro area.
Authorities say Conditt makes no mention of a racial motivation, but investigators are still looking into that as a possibility. The first three victims were minorities.
At a news conference Saturday, Congressman Michael McCaul, a former federal prosecutor who chairs the House Committee on Homeland Security expressed gratitude toward law enforcement for bringing the three-week spree to an end.
He called the investigation a textbook example of how local, state and federal agencies should work together.