UPDATE: We've posted additional details of the evening from police and rappers' perspectives.

NOTE: This story as been updated to reflect the correction appended at the end of this post.

A concert featuring Portland battle rapper and hip hop artist Illmaculate, Luck One and Mikey Vegas at the Blue Monk in Southeast Portland was cut short Saturday night after Portland Police blocked off street access to the club and limited access to the event. Several officers showed up at the venue after the Fire Marshall called for police assistance due to an overcrowding issue in the basement, according to Sergeant Peter Simpson, spokesman for the Portland Police Bureau. Members of the Gang Enforcement Team were also at the scene. Headliner Illmaculate left the venue without performing, protesting "the treatment that hip hop artists get," he said. He tweeted later:

Mikey Vegas opened the show, and Luck One performed as police surrounded the venue.

Luck One's performance can be seen here.

This post will be updated as more information comes in.

CORRECTION: The Portland Police Bureau notified officials with the Oregon Liquor Control Commission about the situation at the Blue Monk on Saturday, but OLCC personnel were not present at the venue. An earlier version of this post contained incorrect information.