CNN
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With just days until Election Day, researchers in Oregon have shared new details about a man they say is responsible for three recent ballot box fires that damaged hundreds of ballots — and they warn he could continue his attacks.

Investigators have not identified the suspect, Portland Police Chief Bob Day said Wednesday, but police released a physical description and other information. Police did not reveal the source of the description.

“As far as anticipating future behavior, that’s speculation,” the chief said. “That is exactly what we have to anticipate. It would be really naive of us or unfair if we said, ‘Hey, it’s all settled,’ and we don’t have him in custody.”

Here’s what authorities said about the person they’re looking for:

Day told reporters to “anticipate” the suspect would attack again, and that security has been increased at Portland’s roughly 30 polls.

Three ballot boxes have been set on fire in the region in the past three weeks. An “incendiary device” found on the side of a ballot box in Portland damaged ballots early Monday, but most were unaffected due to the fire extinguisher installed in the ballot box. That same day, another fire was set at a ballot box in Vancouver, Washington.

Officials have identified 488 damaged ballots retrieved from the burned ballot box in Vancouver, across the Columbia River from Portland, and 345 of those voters have already requested new ballots, according to election officials.

Elections staff will send another 143 replacement ballots to voters on Thursday, officials said at X. Workers were unable to identify six of the damaged ballots. Other ballots may have been completely burned to ash and therefore unidentifiable, Clark County officials said in a news release Wednesday.

Investigators have also linked the two most recent incidents to a third ballot box fire on October 8, also in Vancouver.

As Election Day approaches, state leaders are encouraging citizens to vote despite the incidents and promising increased security around mailboxes.

“There are multiple ways voters can cast their ballots and ensure their voices are heard,” said Washington Governor Jay Inslee.