The man accused of shooting Democratic state lawmakers in Minnesota on Saturday while impersonating a police officer worked for a security company that advertised a fleet of “police type vehicles,” and other equipment that could potentially have aided him in appearing to be law enforcement.

The recent shootings of lawmakers in Minnesota are part of a disturbing trend toward politically linked violence, ABC News analysts say.

Vance Luther Boelter is accused of killing Democrat Melissa Hortman and her husband Mark, and injuring two others.