An 18-year-old man was hospitalized after he had his jaw broken by a two-by-four in a fight involving about a half-dozen teenagers outside an Alamo party on Saturday night, Contra Costa Sheriff's Department spokesman Jimmy Lee said.
The street fight occurred on the 200 block of Viking Place at about 6 p.m. There was a graduation party and someone not at the party wrote something about someone's girlfriend on Twitter, Lee said.
This led to teenagers, affiliated with a different high school — who were not invited to the party — to show up. A fight broke out.
When officers arrived the fight had already been broken up and the suspects had fled. The man who had his jaw broken was invited to the party, Lee said.
No one has been arrested in connection to the fight and the case is still under investigation.
Multiple posts on Twitter indicated the fight was between teenagers affiliated with High in Danville and High in Concord.
A tweet Saturday night from someone connected to De La Salle said, "Jaws broken in two places. Going in for surgery. Thank you so much for the support. Love you all."