OAKLAND (KRON) — Thirty of the 7,000 protesters in Oakland were arrested while demonstrating for the second night over the election of Donald Trump as President of the United States, police said.

The alleged crimes include assault on an officer, vandalism, unlawful assembly, failure to disperse and firearm possession, police said. 11 protesters were also cited.

Three officers were injured at the protest. The extent of the injuries are unknown at this time.

Protesters began to gather at around 4:40 p.m. Wednesday at Frank Ogawa Plaza. The group began with a couple hundred and throughout the evening grew to around 7,000, according to police.

Protesters chanted “not our president” and carried signs reading “Pussy grabs back,” “Donald Trump is a rapist” and “Secede #CalExit.”

Oakland police officers marched on the edges of the crowds through the downtown area. As the evening continued, the large group splintered into smaller groups that allegedly began vandalizing businesses in the downtown area, police said.

The protest was declared an unlawful assembly after 8 p.m. when members of the crowd began assaulting officers with rocks, bottles and explosives.

Police received at least 16 reports of vandalism, including broken glass, graffiti, and looting. There was a widespread of graffiti on walls downtown and numerous trash fires in the streets.

By 9:15 p.m. police had to close Telegraph Avenue from the 1700 block to the 2100 block. The California Highway Patrol also closed the Broadway off-ramp from northbound Interstate Highway 880 for more than 30 minutes.

Just after 9:30 p.m., police told protesters to disperse from the loudspeaker of a helicopter. By 10:30 p.m., the crowd had waned to about 150.

Police deployed tear gas several times throughout the night to keep members of the crowd from throwing rocks, bottles, fireworks, M-80s and Molotov cocktails at officers.

Oakland firefighters and police extinguished around 40 fires. There were 5 OFD medical calls related to this incident. There was 1 incident of arson to a downtown business, police said.

Twelve other law enforcement agencies were called in to assist Oakland police, including police from San Leandro, Hayward, Fremont, Alameda, Livermore, Newark, Pleasanton, Berkeley and the University of California at Berkeley.

Sheriff’s deputies from Alameda and Solano counties as well as California Highway Patrol officers were also on the scene, Oakland police said.

Protesters also filled the streets late Tuesday night after the election in Oakland and Berkeley. There were a few instances of vandalism were reported. One protester was injured when she was struck by a car on Highway 24, which was briefly closed.

In San Francisco, demonstrators met at Market and Powell streets at 5 p.m. for a protest that police described as nonviolent. San Francisco police officers said that no arrests had been made and no dispersal order had been issued.