Police say the man behind ballot box fires has metalworking experience and might plan more attacks

Authorities believe the man who set the incendiary devices at ballot boxes in Portland and nearby Vancouver, Washington, had a “wealth of experience” in metal fabrication and welding

The man suspected of setting fires in ballot drop boxes in Oregon and Washington state is an experienced metalworker and may be planning additional attacks, authorities said Wednesday.

Investigators believe the man who set the incendiary devices at ballot boxes in Portland, Oregon, and nearby Vancouver, Washington, had a “wealth of experience” in metal fabrication and welding, said Portland Police Bureau spokesperson Mike Benner.

The way the devices were constructed and the way they were attached to the metal drop boxes showed that expertise, Benner said.

Authorities described the suspect as a white man, age 30 to 40, who is balding or has very short hair.

Police previously said surveillance video showed the man driving a black or dark-colored 2001 to 2004 Volvo S-60. The vehicle did not have a front license plate, but it did have a rear plate with unknown letters or numbers.

The incendiary devices were marked with the message “Free Gaza,” according to a law enforcement official who spoke to The Associated Press on the condition of anonymity because they were not authorized to discuss an ongoing investigation.

A third device placed at a different drop box in Vancouver earlier this month also carried the words “Free Palestine” in addition to “Free Gaza,” the official said.

Investigators are trying to identify the person responsible and the motive for the suspected arson attacks, which destroyed or damaged hundreds of ballots at the drop box in Vancouver on Monday when the box’s fire suppression system didn't work as intended. Authorities are trying to figure out whether the suspect actually had pro-Palestinian views or used the message to try to create confusion, the official said.

Surveillance images captured a Volvo pulling up to a drop box in Portland just before security personnel nearby discovered a fire inside the box on Monday, Benner said. The early-morning fire was extinguished quickly thanks to the box's suppression system and a nearby security guard, police said. Just three of the ballots inside were damaged.

The ballot box in Vancouver that burned also had a fire suppression system inside, but it failed to prevent hundreds of ballots from being scorched, said Greg Kimsey, the longtime elected auditor in Clark County, Washington, which includes Vancouver.

Elections staff were able to identify 488 damaged ballots retrieved from the box, and as of Tuesday evening, 345 of those voters had contacted the county auditor's office to request a replacement ballot, the office said in a statement Wednesday. The office will mail 143 ballots to the rest of the identified voters on Thursday.

Six of the ballots were unidentifiable, and the office said the exact number of destroyed ballots wasn’t known, as some may have completely burned to ash.

Election staff on Wednesday planned to sort through the damaged ballots for information about who cast them, in the hopes that those voters can be given replacement ballots. Kimsey urged voters who dropped their ballots in the transit center box between 11 a.m. Saturday and early Monday to contact his office for a replacement ballot.

Authorities in Portland said Monday that enough material from the incendiary devices was recovered to show that the two fires were connected — and that they were connected to an Oct. 8 incendiary device at a different ballot drop box in Vancouver. No ballots were damaged in that incident.

Voters in Washington are encouraged to check the status of their ballots at www.votewa.gov to track their return status. If a returned ballot is not marked as “received,” voters can print a replacement ballot or visit their local elections department for a replacement, the secretary of state’s office said.

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Durkin Richer reported from Washington. Gene Johnson in Seattle contributed.