Update 4:41 p.m.: CNN reports police are chasing a 4 wheel drive pickup truck, that other places have reported to be a Dodge, in Big Bear.

Update 4:43 p.m.: CBS 2 now reporting there were two initial gun battles with police. Police tried to make stop Dorner while he was driving a stolen truck, but he refused. There was an initial exchange with police but no one was hit. Dorner stopped the truck to exchange gunfire with between police and that's when two deputies were hit.

Update 4:46 p.m.: There were initial reports of smoke at the scene, which KTLA is crediting to smoke grenades being thrown. It's unclear by whom right now. Dorner is believed to be heavily armed, though.

Update 4:50 p.m.: ABC7 reports Dorner is surrounded in a cabin right now. The CBS live feed is focusing on a cabin where they believe Dorner is located.

Update 4:53 p.m.: According to multiple reports, the gun fire has diminished between Dorner and police officials. It's now being described as a standoff.

Update 5:04 p.m.: CBS LA reports SWAT team and armored vehicles are on the way. The area where Dorner is believed to be located around Seven Oakes Road, Angelus Oaks, California.

Update 5:16 p.m.: According to multiple reports, the two officers shot are now being airlifted to the hospital. CBS' reporter Carter Evans who was in the middle of the initial firefight is okay.

Update 5:15 p.m.: Police are now asking news agencies to stop feeding information and to clear the Big Bear air for "special security reasons." CBS 2 reports gunfire occurred as recently as five minutes ago.

Update 5:29 p.m.: New information is slowing to a trickle, but if you want to watch the live CBS 2 feed then you can do so here:

Update 5:32 p.m.: This is video of the firefight audio captured by the CBS live feed earlier:

Update 5:52 p.m.: The L.A. Times now reports Dorner broke into a cabin days ago and held a couple hostage until he left, stealing their white Dodge pickup truck, on Tuesday afternoon.

Update 5:54 p.m.: LAPD sources confirm to NBC that Dorner is "barricaded" in a cabin near Big Bear, California right now. This isn't new information. Just confirming what we were already pretty sure of according to multiple reports.

Update 6:07 p.m.: The LAPD just held their first press conference of the day confirming what we know so far about the series of events that happened today -- without confirming whether or not Dorner is the person in the cabin right now. The suspect "is similar in appearance" to Chris Dorner. They wouldn't confirm the L.A. Times report about the hostages. Said he believes the suspect is tracking what's happened on television and urged news stations not to show close ups of police activity. The LAPD are only liaisons to this case right now; it's being handled by the San Bernardino Police Department.