A suspect in the ballot drop box fires that occurred in Vancouver, Washington, and Portland, Oregon, before Election Day is still unknown.

Federal authorities are offering a $25,000 reward in connection with October's string of ballot box fires in the Pacific Northwest as they also released new surveillance video in an attempt to find the suspect.

Newly released surveillance video shows a ballot box being set on fire in Portland, Oregon, last month. The video shows the suspect lighting what appears to be a fuse, then placing it inside the ballot box.