PORTLAND — Portland police say one of their officers was bashed in the head with a beer mug by a man who couldn’t be stopped by a stun gun or pepper spray.

The offer’s head was stapled, and the man was accused of assault and resisting arrest.

Police said the officer, Jakhary Jackson, warned a jaywalker in north Portland, and the man charged.

In a struggle, the man hit the officer with a mug, and the two covered about 50 yards as the officer tried unsuccessfully to subdue the man.