Authorities in Phoenix say there has been shooting at a house on fire on the city's northwest side and that gunshot victims are in the home.

Details are sketchy about the incident unfolding Tuesday morning, but police Sgt. Trent Crump says there was an active shooter in the house and that it was on fire. Fire Capt. Reda Bigler says there were gunshot victims in the home, but that their conditions weren't known.

Dozens of fire units are at the scene.

Journalists were being kept hundreds of feet from the home and at least one local television station cut away from showing live video from a helicopter. An anchor for KNXV-TV said that was to avoid giving away the positions of police around the house.