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CHULA VISTA, Calif. — Firefighters said they believe an arsonist is responsible for about 10 spot fires that broke out Sunday near the Otay River. The fire was about 5% contained as of 12:36 p.m.

Law enforcement said there was a suspect in custody and later identified the man as 49-year-old Ramon Guevara.

#BREAKING SDPD confirms they have arrested and charged 49 year-old Ramon Guardiola in connection to multiple fires that broke out in Chula Vista near the Otay Valley Regional Park. @fox5sandiego — Andrew Nomura (@NomuraReports) September 15, 2019

The first report of a brush fire on Beyer Way came in at 10:30 a.m. and the first fire truck arrived on scene at 10:50 a.m., according to a San Diego Fire-Rescue Department incident report. Parts of Beyer Way were shut down while crews battled the flames.

BREAKING: Crews are battling around 10 spot fires in Chula Vista right now with about 5% containment. Authorities believe it may be the work of an arsonist. There is a suspect in custody. No structures are currently threatened. Parts of Beyer Way are closed.@fox5sandiego pic.twitter.com/kH7FGd3OcB — Merrilee Moore (@mmooreofficial) September 15, 2019

According to crews, at least 10 spot fires were burning along the road.

Units from the Chula Vista and San Diego fire departments joined to battle the fire. Firefighters said no structures faced any immediate threats.

Firefighters were able to get the fire controlled by 1:30 p.m.

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