SAN FRANCISCO (CBS SF) — Seven people suffered minor to moderate injuries Tuesday morning in a multi-vehicle crash at the intersection of Lake Merced Boulevard and John Muir Drive, according to the San Francisco Fire Department.

The department tweeted out about the accident at around 11:20 a.m.

A total of three ambulances responded to the scene. Lake Merced Boulevard was blocked during the incident. Residents are being asked to avoid the area until the accident is cleared.