UPDATE: Gunman who opened fire at Colorado Planned Parenthood taken into custody

UPDATE 5:14 p.m. local time: A gunman who opened fire Friday afternoon at a Planned Parenthood clinic in Colorado has been taken into custody, according to CBS News. The man apparently surrendered after a more than 4-hour stand-off with police. According to reporters on the scene, 11 people, including 5 police officers, have been hospitalized with injuries.

Police are sweeping the building, and the identification of the shooter has not been released.

An active shooter was reported at a Colorado Springs Planned Parenthood facility at about 11:45 a.m. local time. Police said the gunman shot at passing cars from the parking lot of a clinic in Colorado Springs, reported KRDO-TV.

A police officer said the gunman shot out the rear window of his patrol car as he drove past to "get a look at him."

A witness told KKTV he was going into King Sooper grocery story when he heard a gunshot fly over his head from Planned Parenthood and hit a stop sign behind him. The man, a combat veteran, tried to clear as many people from the area as he could as he took cover.

Dispatchers said the gunman was wearing a long coat and a hunting-style hat.

"The area is NOT secure," police said in a tweet.

Police have confirmed five officers were shot. One police officer was reportedly shot in the hand. The extent of the other officers' injuries is unknown.

Multiple other shooting victims have been reported, although no additional details are available.

The gunman has barricaded himself inside the clinic, police said.

Police said the gunman has been "contained." At least a dozen officers are at the scene and engaged in a standoff with the gunman.

Streets near the clinic have been shut down. Multiple businesses are on lockdown.

UPDATE 1:25 p.m. local time: The gunman is believed to be inside the building, but the area is still not secure according to police.

UPDATE: 1:34 p.m. local time: Three police officers have been injured. The shooter has not been apprehended. An unknown number of civilians have been injured. Shooter carrying a "long gun" of unknown type.

UPDATE 1:50 p.m. local time: Police now say they cannot confirm whether there is 1 or 2 shooters and what their location is.

UPDATE 2:30 p.m. local time: Police confirm fourth officer injured. Scene is still very active. Civilian injuries still unknown.

UPDATE 2:50 p.m. local time: Denver Post reporting 5 injured civilians transported to local hospital. Police say gunman is still actively shooting at them. Police reportedly rescuing people from inside Planned Parenthood building.

UPDATE 3:35 p.m. local time: At least 9 people taken to local hospitals, according to the Post.

UPDATE 4:50 p.m.: A police spokeswoman says the suspect brought unknown items into the building. Authorities and the gunman were trading fire just minutes before press conference.

With reporting by Bethania Palma Markus