TOPEKA, Kan. — A man with a history of theft and weapons convictions gunned down two police officers investigating possible drug activity in a Kansas grocery parking lot and was later killed after an armed standoff, authorities said Monday.

Kyle Smith of the Kansas Bureau of Investigation identified David Tiscareno, 22, of Topeka as the man who opened fire on Topeka police Corporal David Gogian, 50, and Officer Jeff Atherly, 29, Sunday night.