Police evacuate Beaverton 7-Eleven after microwave explosion, find urine sample

BEAVERTON, Ore. – Officers evacuated a 7-Eleven in Beaverton Tuesday after a suspicious object exploded inside the convenience store’s microwave.

Officers were called out to the 7-Eleven at 4700 SW Murray Road on reports that a strange object was left in the store's microwave. The store was evacuated out of an abundance of caution, and the Portland Police explosives unit was called out to investigate.

According to police, the object turned out to be a urine sample that was wrapped in a hand warmer.

"It appears that whoever was on his/her way to do a drug test did not feel that it was warm enough, so they decided to microwave it at 7-Eleven," Beaverton Police spokesperson Mike Rowe said in a release. "The chemical makeup of the hand warmer did not agree with the microwave and exploded."

Police said they will review security camera footage from the store to find out who left the cup in the microwave, and, as Rowe put it, "most likely did not pass their UA today."

This is a developing story; updates will be posted as information comes in.