Florida Highway Patrol officials are reporting three arrests and one minor crash after hundreds of people riding dirt bikes and all-terrain vehicles disrupted rush-hour traffic across South Florida.

The Miami Herald reports the riders sped across Miami-Dade and Broward counties Monday afternoon along Interstate 95, U.S. 441, Northwest 7th Avenue and Hollywood Boulevard.

Troopers say there was a related minor crash on Florida's Turnpike. No one was injured.

Highway Patrol spokesman Joe Sanchez says giving chase to the riders would have jeopardized the safety of other drivers. Miami Police spokeswoman Frederica Burden says it's not clear where the riders came from or what initiated their spree.

One rider said the group was observing the holiday honoring the Rev. Martin Luther King Jr. and his legacy of nonviolent protest.