Domestic dispute leads to alleged arson in Grass Valley |

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Domestic dispute leads to alleged arson in Grass Valley

Photo for The Union by John Hart

A Grass Valley man was arrested Saturday on a litany of alleged offenses — including physically abusing his girlfriend before setting fire to his house and throwing gasoline on a police officer trying to apprehend him, police said.

Alan Trewin, 48, of Grass Valley is being held on $250,000 bail after being charged with five felonies and one misdemeanor stemming from a Saturday morning domestic dispute.

Grass Valley Police Department officers were dispatched to the 300 block of Hill Street in Grass Valley around 11 a.m. and found a female with visible injuries, said Sgt. Joe Matteoni.

Officers searched the rest of the house, and Trewin had allegedly barricaded himself in a small room between the house and the garage and refused to come out when contacted by GVPD, Matteoni said.

GVPD forced entry into the room, and Trewin threw gasoline on one of the officers, Matteoni said.

At some point prior to locking himself in the room, Trewin allegedly started a fire in the single-story residence, although police remain unclear on when and exactly how the blaze was sparked.

Nevada County Consolidated Fire District responded with Grass Valley Fire Department, Nevada City Fire Department and Cal Fire.

"It was a small fire in a bedroom," said Consolidated Fire Battalion Chief Jerry Funk.

Firefighters found the fire was already extinguished upon arrival, but heavy smoke was emitting from the room.

The female on scene refused transport to a hospital, and Consolidated Fire will investigate the cause of the fire, according to a Saturday news release.

Trewin was ultimately charged with arson, spousal abuse, burglary, throwing a caustic chemical on an officer, assault with a deadly weapon and resisting arrest.

The burglary charge is due to Trewin allegedly entering the room with an intent to commit a felony.

"Trewin has a substantial arrest record," Matteoni said.

To contact Staff Writer Matthew Renda, email or 530-477-4239.