CONTRA COSTA COUNTY (CBS SF) — Fire crews are responding to a five-acre vegetation fire burning in the eastern part of Contra Costa County, according to authorities.

The Cal Fire SCU unit tweeted about the fire at around 12:45 p.m.  The so-called Orwood Incident is burning near the town of Orwood north of Discovery Bay in the Sacramento-San Joaquin River Delta.

There were no other details available regarding the fire.