KCAL and KNX are broadcasting live from the shootout, which is taking place just off Highway 38 at Seven Oaks Road.
NBC4 is now reporting that an officer has been shot, possibly two, in an exchange of gunfire with Dorner.
The Riverside County Sheriff's Department broadcasted a general advisory stating that fugitive murder suspect Christopher Jordan Dorner was possibly involved in a home-invasion robbery in the 1200 block of Club View Road in Big Bear. Cindy Bachman of the San Bernardino County Sheriff's Department
told NBC4 that deputies received a report at 12:20 p.m. about a stolen vehicle
from a home, and the suspect's description matched that of triple-murder suspect Christopher Dorner.
A couple were tied up in their house, and the suspect fled in their 2008 white Dodge pickup truck with a back hitch, heading south on state Route 38, possibly toward Cherry Valley.
A state Fish & Game ranger apparently fired on the vehicle, according to the sheriff's broadcast.
Highways into the Big Bear area have been closed down, cutting off access to and from Big Bear, according to Cindy Bachman of the San Bernardino County Sheriff's Department.
The 33-year-old, who was fired from the Los Angeles Police Department officer, is suspected of killing two people in Irvine and a police officer in Riverside.
Patch will update with more information as it becomes available.
This report was compiled with information from City News Service.