A Las Vegas police officer is being investigated by a federal grand jury after he kicked a man in diabetic shock five times in the head during a traffic stop, it was revealed today.

Henderson police sergeant Brett Seekatz was caught on dashboard camera beating Adam Greene after he was dragged from his car in the controversial 2010 incident.

In the video, Greene was stopped by officers who said they thought he was driving drunk. The diabetic was in fact suffering from severe hyperglycemia while on his way to work.