At least two fatalities have been reported following a shooting at Accent Signage Systems Inc. in Minneapolis’ Bryn Mawr neighborhood. KMSP, Minneapolis’ Fox affiliate, is also reporting that at least four people were wounded, with three in critical condition. The shooter, who had been fired this morning, is among the dead:

A high-ranking law enforcement source confirmed to FOX 9 that the shooter arrived at the office Thursday afternoon after being terminated from his job that morning.

That source says police have information indicating he may have been targeting specific employees. The shooter was also known to police prior to Thursday’s incident.

Shortly after 5:30 p.m. police found the shooter dead of a self-inflicted gunshot wound in the corner of the basement. It took about 30 minutes for SWAT and Minneapolis police to methodically search the building as they secured the scene outside.

We will continue to monitor this story and bring you updates as they come in.

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Twitterers in Minneapolis and beyond sent out their prayers:

Our thoughts and prayers are with the victims and their loved ones.

Update:

The gunman killed four victims before taking his life.