Actor Daniel von Bargen has died, aged 64.

The Seinfeld regular, who played Jason Alexander's clueless boss Mr. Kruger on the hit sitcom, passed away over the weekend (28Feb15-01Mar15) after suffering an undisclosed illness, according to news affiliate Wlwt in his native Cincinnati, Ohio.

Von Bargen also appeared in multiple episodes of Malcolm in the Middle, Law & Order and NYPD Blue, and his movie credits included The Silence of the Lambs, Philadelphia, Amistad, O Brother, Where Art Thou?, and Super Troopers, among others.

He made headlines in 2012 for a failed suicide attempt, which resulted in a gunshot wound to the head.