STATEN ISLAND, N.Y. -- Francesco Colina, the Great Kills man who jumped to his death at the Staten Island Mall Tuesday, was terminally ill.

"He had cancer and was depressed," said his daughter, Francesca. "He was a great man; a great father; and a great grandpa."

Video surveillance showed that Colina, 84, stood on a chair and jumped over the railing, according to a source with knowledge of the police investigation.

Multiple witnesses claimed they saw the senior citizen push a chair to the second-floor railing in the Sears wing, jump and land in front of the Gap.

An off-duty firefighter who was shopping in the mall immediately ran over to the man, who was lying face down and bleeding heavily, a source at the scene said.

Police and firefighters rushed to the New Springville shopping complex after the 11:19 a.m. incident.

Colina was rushed him to Staten Island University Hospital in Ocean Breeze in critical condition. He was pronounced dead a short time later.