VISTA, Calif. (KGTV) — A possible water main break caused a hillside in Vista to collapse Monday afternoon.

According to the San Diego County Sheriff’s Department, a retaining wall on the 300 block of West Los Angeles Drive just before 1 p.m. Barbed Wire Fence

Video from the scene shows debris from the hillside on top of several vehicles. No injuries were reported.

Authorities have requested the evacuation of a nearby apartment building as a result of the incident.

Building A Rock Wall Sky10 flew over the scene Monday. Watch video in the player below: