An affidavit filed by a Cal Fire investigator late last month in support of a warrant to arrest Vasquez lays out some of the evidence — including witnesses and cellphone data — that helped lead investigators to a suspect. Gochnour also laid out some of the evidence during the arraignment.

Ruben Vasquez was arrested Friday on two counts of felony arson charges and taken to the Vista Detention Facility.

CAL FIRE arrested Ruben Vasquez on felony arson charges after wildfires burned nearly 100 acres in Pala Mesa and Bonsall.

State officials have released a third batch of maps showing fire hazards in California's Bay Area and the state's northern region.

Text messages released to ABC News through a public records request provide new insight about what local officials were discussing before, during and after the fires.