San Jose firefighters are investigating a string of suspicious fires early Thursday, and they've obtained surveillance video that could be helpful in finding the person responsible.
Fire officials say crews responded to at least six fires between 2 and 6 a.m. Arson investigators are also looking into the incidents, which include several dumpster fires and debris fires.
Authorities said the fires are considered suspicious because they ignited 15 minutes apart from each other. One of the fires turned into a two-alarm structure fire and damaged a liquor store at the intersection of Willow and Vine streets.
Grainy surveillance video released by investigators late Thursday shows a person on a bicycle that could be connected to the fires, police said. The person's face cannot be seen in the footage.
Investigators said they will continue studying surveillance video from several of the fire scenes for evidence.
NBC Bay Area's Sergio Quintana contributed to this report.