Four people were injured, two critically, in a two-alarm fire in San Francisco’s Mission district early this morning, fire department officials said.The blaze was reported around 4:30 a.m. in a rear unit on the top floor of a three-story apartment building at 3360 24th St., near Bartlett Street, according to the fire department.Firefighters battled strong winds but were able to control the fire in about an hour. Read More