AURORA, Colo. - Police have said little about the gas mask-wearing suspect arrested in connection with a mass shooting in the Denver suburb of Aurora.
Aurora Police Chief Dan Oates says witnesses reported the person released some type of a canister, then they heard a hissing sound and saw a gas -- and then the gunman started shooting.
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Officers found the suspect near a car behind the theater and also located a gas mask, rifle, handgun and at least another weapon.
The suspect's name hasn't been released and police haven't indicated if there was a motive.
Oates says the suspect talked about the possibility of explosives at his apartment, so other residents of the building were evacuated. He says police also checked for explosives in the parking lot and at the theater.