Lt. Lincoln Hoshino said the collision occurred around noon Saturday. Brown told police that he lost control of his black Porsche during the chase.
Hoshino said police will investigate the incident. He said he didn’t know whether the paparazzi in the pursuing vehicles have been identified.
A call to Brown’s lawyer was not immediately returned.
The crash came a day before the Grammy Awards, where Brown is up for best urban contemporary album, almost exactly four years after Brown assaulted his girlfriend, singer Rihanna, the night before the awards show in 2009.