The FBI said Elpidio Reyna, 39, of Compton was taken into custody Wednesday morning at the U.S.-Mexican border after negotiating his surrender.
Reyna reportedly fled to Mexico after the alleged assault on June 7, which was right when the immigration raids began in Los Angeles. He's accused of injuring a federal official while damaging law enforcement vehicles on Alondra Boulevard.
The publicity led to Reyna's arrest in the Mexican state of Sinaloa.
After agreeing to surrender, Reyna was arrested by FBI agents at the San Ysidro Port of Entry in San Diego County.
Reyna was taken to Los Angeles, where he was due to appear before a U.S. magistrate on Wednesday.
City News Service, Inc. contributed to this report.