Just happened in Florence, the deputy is part of an anti-gang unit and was on patrol.
It was reported on the scanner that there were 2 to 3 suspects with guns (suspected gang members) and a large area is cordoned off. There are dozens of deputies in the area and 3 sheriff's/LAPD helicopters. If the suspects are still in the cordoned off area, there's no way they'll escape.
They haven't reported the condition of the officer yet but he was alive while en-route to a local hospital.
Hope he'll be okay. It's also being reported live on TV.
Edit: 2230: they switched frequencies to A-TAC 4 - 484.1125
Sheriff’s Deputy Reportedly Shot In Florence « CBS Los Angeles