DENVER -- Denver police were investigating a shooting at the District 4 police substation Wednesday afternoon.
Chief of Police Robert White said officers arrested a man wanted on a felony warrant related to drug charges and took him to the substation at 2100 S. Clay Street.
The man, 32-year-old Isaac Vigil, had a gun on him, but somehow the officers did not find it when they searched him before placing him in their patrol car.
As the officers took the man out of the patrol car, he pulled out a gun and opened fire, White said.
"The individual prior to getting out of the vehicle, produced a handgun and fired it at the officers," White said.
Police returned fire, hitting the man, he said.
The suspect was taken to a local hospital for treatment around 5 p.m. White said he was in critical condition but expected to survive.
No officers were harmed in the shooting.
White said the suspect was handcuffed when he was placed in the patrol car. He said he did not know how thoroughly the man was searched before being placed in the police car.