A Gresham man was arrested after throwing a Molotov cocktail at his neighbor’s garage door and setting his own house on fire, police say.

Witnesses saw Seth Ames, 41, throwing the Molotov cocktail, according to Gresham police. Police also said Ames set his own house on fire from his basement.

Both fires in the 18600 block of Southeast Brooklyn Court were put out. No one was hurt.

Authorities are investigating Ames’ motive, police said.

He was arrested after nearly hitting a police car with his own vehicle and then crashing into a trailer, according to police.

Ames was being jailed early Wednesday on suspicion of arson, unlawful manufacture of destructive device, reckless endangerment and reckless driving, police said.

The incident was reported about 12:10 a.m.

-- Jim Ryan; jryan@oregonian.com; 503-221-8005; @Jimryan015

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