A predawn fire possibly caused by squatters damaged the roof of a Vista optometry office Friday.
The non-injury blaze erupted about 5:30 a.m. in a shed housing air-conditioning equipment atop the two-story commercial building in the 800 block of East Vista Way, near Townsite Drive, Vista Fire Chief Ned Vander Pol said.
It took crews about 20 minutes to subdue the flames, which did not damage the interior of the structure, Vander Pol said.
The cause of the blaze was under investigation, though it was believed to likely have been accidentally sparked by homeless people, the fire chief said.
City News Service contributed to this article.
