Shocking surveillance video out of Washington state shows two teens robbing a clerk, leaving him to die as he suffers a heart attack.

"It just blows my mind. It breaks our hearts," store manager Angela Sharapova told KOMO. "We can’t believe that this happened."

Auburn police shared the video to Facebook on Monday night in hopes of identifying the customers caught on camera.

Police say it was around 5 p.m. Saturday when a man and two teens entered the Shell gas station.

One of the teens grabbed a pepperoni stick and began to eat it, then grabbed a second one and handed to the other teen. As the man went to pay for an item, the clerk apparently tried to charge him for the two pepperoni sticks and an argument ensued, police said.

One of the teens gave the clerk $1 at which point the clerk became upset and went up to the teens to talk to them. After talking with the boys, the clerk turns around and then collapses to the floor from an apparent medical issue.

"He was saying ‘This is wrong and you have to pay for it.’ And at this point, he stepped back to behind the counter and that’s when he collapsed," Sharapova said.

"One of the teenagers reaches down and takes the dollar bill back from the clerk while he is on the ground. The adult male then exits the store. While the clerk is on the ground unconscious, the two teenage males exit and enter the store a couple of times stealing merchandise and taking all the money from the cash register," police wrote in a Facebook post.

"Going in and out three times. While he’s on the floor in agony," Sharapova said.

"While the clerk was on the ground dying, neither of the three subjects who saw him fall to the ground called for help," police said.

A customer entered the store about three minutes later and immediately called 911. The clerk is now on life support at a hospital.

"It just breaks our hearts," Sharapova said. "Now this guy is fighting for his life. He has three little children. He has a stay-at-home wife. We just pray to God that he makes it."