Firefighters respond to possible grass fire on 210 Fwy. near La Tuna Canyon [Updated]

Firefighters are responding to reports of a grass fire on the shoulder of the Foothill (210) Freeway near La Tuna Canyon Road.

A Sigalert has been issued for the westbound 210 lanes.

[Updated 1:59 p.m.: The smoke was reportedly from an overheating vehicle pulled over on the shoulder of the freeway.]