What we know about the shooting in Philadelphia

A standoff in North Philadelphia between police and at least one gunman Wednesday has left at least six officers wounded, a police spokesman said.

Here’s what we know:

Where the shooting took place

Police and other law enforcement agencies responded to a report of an “active shooting” in the North Philadelphia neighborhood of Nicetown-Tiago, Sgt. Eric Gripp, the police spokesman, said on Twitter.

The shooting began when authorities attempted to serve a warrant on the 3700 block of North 15th Street at about 4:30 p.m. ET, CNN affiliate KYW reported, citing police.

Police were first called to the area for drug activity, Police Capt. Sekou Kinebrew told KYW.

Authorities have repeatedly urged residents to stay away from the area because shots were still being fired.

“Suspect is still firing. STAY OUT OF THE AREA,” Gripp said.

Video from a news helicopter showed more than 50 police vehicles at the scene. It also showed police officers kneeling and crouching behind various cars with guns drawn.

Gripp also asked media helicopters to “pull back.”

Temple University put its Health Sciences Center, about 2 miles from the standoff, on lockdown, school spokesman Ray Betzner said.

“Seek shelter. Secure doors. Be silent. Be still. Police are responding,” the university said on Twitter. More than an hour later, the university continued to advise students to “stay indoors away form windows.”

The victims

Six police officers have been shot, Gripp said.

The officers, who were not immediately identified, were taken to area hospitals with non-life threatening injuries, he said.

“Suspect is still firing. SIX (6) PPD Officers shot – at area hospitals with non life threatening injuries. Additional officers also receiving treatment for non-gunshot injuries. Continue to avoid area. Situation is active and ongoing,” the tweet said.