Two men were arrested at about 7:30 p.m. Wednesday after police responded to a gang fight near Pueblo Avenue and Brown Street, authorities said.
The two men who were arrested, Rene Yanez, 20, of Concord, and Ignacio Castro, 18, of Napa, were on probation with terms that prohibited them from associating with other known gang members, Napa police said.
Yanez allegedly carried a concealed fixed-blade knife, police said. He was booked into the Napa County jail on suspicion of being in possession of an illegal weapon, being involved in a gang crime and violating probation, police said.
Castro was booked into the Napa County jail on suspicion of probation violation, police said.