The Chase Bank security guard was stabbed to death by a customer at a New York bank

An apparently angry customer stabbed a security guard in the neck at an Upper East Side bank on Friday morning, leaving him clung to life, police officers said.

The uniformed private security guard was stabbed to death by the male assailant just after 9 a.m. in the front office of Chase Bank on East 86th Street near Second Avenue, police officers said.

He was taken to Weill Cornell Medical Center in critical condition, police said.

The attacker could have been a bank customer who was unhappy with the service and became angry, police officers said.

He fled after the attack and police were still searching for him hours later.

He is believed to be Hispanic with long curly hair and was last seen in a white shirt.