Four people were shot, with one wounded critically, in Southwest Philadelphia last night, police said. A gunman came up to a group outside a house in the 2200 block of South Hobson Street at 9:24 and fired 11 rounds, said Lt. John Walker of Southwest Detectives.

A 25-year-old man was shot in the torso and was taken to the Hospital of the University of Pennsylvania in critical condition, Walker said. A 34-year-old man was shot in an arm and taken there. A 39-year-old woman and her 16-year-old son were each shot in a leg and were at Hahnemann University Hospital in stable condition. All were watching activities related to a prom when the gunman, wearing a blue-hooded sweatshirt and white mask, opened fire, Walker said, then ran off. - Robert Moran