DALY CITY -- A person was struck and killed by a vehicle on Interstate 280 near John Daly Boulevard around 6:30 p.m. Tuesday, according to the California Highway Patrol.

CHP officials said it was not immediately clear why the person was on the roadway, and the vehicle involved apparently did not stop at the scene.

A traffic alert was issued around 6:50 p.m. as multiple lanes were closed for the investigation. The roadway was cleared and the alert canceled around 8:15 p.m.

No further information was immediately available.

Contact Eric Kurhi at 408-920-5852. Follow him at Twitter.com/erickurhi.