Philadelphia ? Two undercover narcotics officers were shot Tuesday evening while trying to serve a warrant, the latest in a spate of shootings at police that has left one city officer dead this year.

One officer was shot in the leg; the other was hit in the hip. Both were reported to be in stable condition at different hospitals. “Both of them are very, very lucky,” police Commissioner Sylvester Johnson said.

The suspected gunman was believed to be still inside a house where the shooting occurred in northeast Philadelphia, Johnson said.

Several hours after the shooting, police took up to seven people from the house into custody. It was not immediately known if the suspected gunman was among those take into custody.

The commissioner said police trying to serve the warrant rang the door bell twice and then used a battering ram on the door. The shooter then fired through a window, he said.

The injured plainclothes officers were wearing badges, Johnson said.