ROCHESTER, Minn. (AP) — A Minnesota man is accused of threatening Mayo Clinic staff on a Facebook post which police say shows him holding a replica assault rifle.

Rochester authorities say the 36-year-old Pine Island man was apparently dissatisfied with his treatment at Mayo and posted a photo saying he was going to go “intern hunting.”

Someone reported the Facebook posts to Mayo security and police were called. The man was arrested Friday.

(© Copyright 2015 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)