Killer Burger, the Portland, Oregon-based burger chain, is expanding.

Earlier this week, Killer Burger announced it will open six locations in the greater Seattle area over the next five years, reports The Oregonian.

According to the Oregonian, the new Killer Burger locations will open in Tacoma, Puyallup and Olympia. Dave Edwards is the owner of the franchise, which also operates 26 Papa John’s Pizza stores.

“We were incredibly impressed with the immediate success we saw following our first opening in Salem, and are confident in our decision to extend the partnership to another six units,” Edwards said in a press release.

Killer Burger opened in Portland in 2010.

According to Eat This, Not That, Killer Burger currently operates 23 restaurants in the Pacific Northwest.