LOS ANGELES (AP) — A woman has been arrested in the investigation of the beating of a 92-year-old man in Southern California.

The Los Angeles County Sheriff’s Department says detectives took 30-year-old Laquisha Jones into custody late Tuesday in Los Angeles and booked her into jail for investigation of assault with a deadly weapon.

Rodolfo Rodriguez was beaten around 7:30 p.m. July 4 on a sidewalk in the unincorporated Willowbrook area.

A witness made a video of Rodriguez moments later as he sat on the ground dazed, his face bloodied. The witness said the assailant struck him several times on the head with a brick. Three or four men reportedly also joined the attack.

The Sheriff’s Department says the motive remains unknown.

Jones remains jailed in lieu of $200,000 bail.