NEW YORK - A Pakistani man attending a gas station in Staten Island, a borough of New York City, was shot in the back and killed on Wednesday night during what the police called an apparent robbery attempt. Mohammad Ishfaq Ahmad, 50, was shot near the pumps at the Gulf Station, but the mortally wounded man staggered into an adjacent convenience store before collapsing, according to media reports. "He told the attendant to call the police," said the store owner, Zahid Chaudhry. "Then he fell to the ground." Although two customers were outside pumping gas at the time of the 9 p.m. shooting and the attendant was inside the store, no one saw the crime, police said. Ishfaq Ahmad, who died a short time later at a hospital, had emigrated from Pakistan a decade ago and once owned a gas station, Chaudry said. But Ahmad lost the property and took a job as an attendant at the Gulf Station so he could continue to send money to his family, according to reports. Ahmad rented a small apartment in a rooming house not far from where he worked. His neighbours said he lived alone. "He was a pretty cool guy. Calm," said Chaudry. "He never had a fight with anybody. He was a good worker." Police officers swarmed the gas station for hours overnight looking for any surveillance video and other evidence. No arrests have been made.