SAN BERNARDINO (CBSLA.com) — Police are investigating a report of shots fired in San Bernardino.

San Bernardino Fire officials are reporting at least 20 victims in a shooting in the 1300 block of South Waterman.

SBFD units responding to reports of 20 victim shooting incident in 1300 block of S. Waterman. SBPD is working to clear the scene.

— San Bernardino Fire (@SBCityFire) December 2, 2015

.@SanBernardinoPD has confirmed an active shooter in the area of Orange Show Rd/ Waterman Ave near Park center. #SBCSD assisting.

— SB County Sheriff (@sbcountysheriff) December 2, 2015

Authorities responding to report of ’20 victim shooting’ incident in San Bernardino. https://t.co/SmG0s0CGAQ pic.twitter.com/m0VzlSF7BC

— Debbi Baker (@Debbi_Baker) December 2, 2015

Authorities are advising all motorists to stay away from the area around the Inland Regional Center, a center serving people with developmental disabilities in San Bernardino and Riverside counties.

Hard Closure at Orange Show Rd/ Waterman and Park Center Circle in San Bernardino. AVOID THE AREA POLICE ACTIVITY!

— SB County Sheriff (@sbcountysheriff) December 2, 2015

This is a breaking news report. More information will be added as it comes in.