A brush fire in Pacific Palisades flared up and grew to 750 acres on Saturday, sending a large plume of smoke into the sky that could be seen for miles and triggering the evacuation of some residents in Topanga Canyon, fire officials said.

The cause of the fire near Topanga State Park — which ignited around 10 p.m. on Friday — is still under investigation, the Los Angeles Fire Department said.

Fire personnel spotted a potential arson suspect early Saturday, but a search by the Sheriff’s Department didn’t find any suspects, Fire Department spokeswoman Margaret Stewart said.