At least two people were killed and four others injured in a workplace shooting on Thursday in Minneapolis, which also left the gunman dead.

Witnesses reported hearing multiple gunshots at Accent Signage Systems, a company that makes interior signs and is based in a largely residential section of the city.  A spokesperson at Hennepin County Medical Center says the hospital took in three people with critical injuries and weren't expecting any more.  A Minneapolis police spokesman said at least four people were taken to area hospitals.

FOX News has confirmed that the gunman was fired from the company on Thursday, later returning to the site and opening fire.  He took his own life in the building's basement.

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