There’s a mixture of panic and frustration on the campus of the University of Denver Thursday afternoon, as campus security has asked students to seek shelter due to reports of a man carrying an assault rifle entering Ritchie Center.

The university issued a similar warning Tuesday night, but the assault rifle in question turned out to be a hockey stick, leaving many skeptical.

Twitchy will update this post as circumstances warrant.

Update: Campus security have sounded the all-clear.