The father of the two young brothers at the center of the Boston bombing investigation mourned his dead older son, calling Tamerlan Tsarnaev "a true angel."
Tsarnaev, 26, and his brother Dzhokhar, 19, were identified by the FBI as suspects in Monday's deadly explosions at the Boston Marathon. A series of events early Friday morning lead to a massive manhunt and shootout in Watertown that left Tamerlan Tsarnaev dead.