Cedric Simon, 34, the 2nd District D.C. police officer who received a heart transplant last year after hundreds of fellow officers raised money and donated their leave time to him, died at Georgetown University Hospital last night, officials said.

Simon, who underwent the operation in November after doctors discovered that he had an enlarged heart, died about 8:30 p.m., said Kate Egan, a hospital spokeswoman.

Egan said the officer was admitted to the hospital July 26, and that an autopsy would be performed.

Gary Hankins, chairman of the Fraternal Order of Police labor committee, said Simon entered the hospital after suffering chest pains.

Hankins said that since the heart transplant, Simon had been "doing remarkably well" and had returned to the force on limited duty.

Simon lived in Northeast Washington with his wife, Denise, and their two children.

He "was at work every day" and "intended to work his way back to become the first heart transplant recipient working full duty," Hankins said.

When it was discovered that Simon needed a heart transplant, D.C. officers established a fund to help pay for the surgery.

Hundreds of officers also donated more than six months of leave to ensure that the department would keep Simon on the payroll and send him regular paychecks.

Without the donated leave, Simon, who was on sick leave, would have been forced to go on leave without pay.