While police blamed the death on the truck's door, an official from Vesuvio Foods Co., the company that owns the truck, said his driver says the police van hit the cyclist.
Steve Manning, a Vesuvio vice president, said his drivers did not open the door until after they heard a thump on the side of the truck.
They looked out and saw the victim, 42, lying in the street, blood pouring from his head, he said.
"His door was shut," Manning said, speaking from his office in Edison, N.J. "He heard an impact on his door -- a bang, a clang, a crash. He opened the door and he found a bent up bicycle and a bicyclist lying in the street."
According to his driver and his helper, it was the police van moving at a high rate of speed that threw the cyclist into the door.
Manning said Vesuvio would continue to investigate.
A police official said that after a thorough investigation by both the Accident Investigation Squad and Internal Affairs, police discovered fresh marks on the truck's passenger door consistent with the dead cyclist's bike.
"They went over the PD vehicle and there were no fresh marks on it whatsoever," the official said. "I am confident in the investigation, it was thorough. It appears to be an unfortunate accident caused by the door of the delivery truck." The cyclist was not wearing a helmet.
After three hours of questioning, the police let the drivers make their delivery of Pellegrino water, eggs, oil and vinegar to Ciro Trattoria, a nearby restaurant.
Police did not issue a summons for double parking, but did issue a ticket for a slash in one of the trucks tires.
The ticket will be squashed if the tire is repaired in 48 hours.