TYLER, Texas (KETK) - UPDATE: One man was arrested after attempting to rob a couple, before being stopped by two good Samaritans in the Village at Cumberland Park's parking lot.
According to a press release by the Tyler Police Department, 34-year-old Chad Boening approached a man and woman in the parking lot between FD's Grill House and Bed, Bath and Beyond. Police say he brought out a knife and threatened the woman saying "do you want to see her die."
Police say that a father and a son saw the incident from their vehicle and confronted the man. Both men brought out their concealed handguns to subdue Boening.
Boening was held on the ground until an off-duty Game Warden who was in the area took him into custody.
He was later arrested when Tyler police arrived.
Boening is being charged with aggravated assault.
The incident is still under investigation.