A protest over the death of George Floyd that briefly blocked Interstate 5 was ordered to disperse in downtown San Diego on Sunday afternoon as tear gas and flashbangs were fired into the crowd.

Although the demonstration was largely peaceful, tensions flared in the afternoon. At one point, several water bottles were thrown at officers, and police fired flashbangs soon afterward. At least three people were arrested, although it’s unclear what crimes they were suspected of committing.

By about 2:45 p.m., a stretch of Broadway was shut down and protestors were told to clear the area. Demonstrators could be heard shouting “Let us walk!” as more flashbangs went off. Officers also fired a volley of rubber bullets or some other less-than-lethal ammunition in an effort to disperse the crowd.