By KAREN VELIE

A fire at 206 Nighthawk Drive in Paso Robles on Tuesday has spread to a residence next door. Flames have engulfed both homes, witnesses said.

A caller reported the fire at about 3:44 p.m, according to Cal Fire. Nine units have responded to the blaze.

During the fire, explosions are regularly heard. CalCoastNews will provide updates as more information is available.