New York, September 3 (RHC)-- In New York, a newly released video shows the final hours of the life of a diabetic prisoner at Rikers Island jail who was reportedly deprived of his insulin medication and left to slowly die.

Carlos Mercado was arrested two years ago for attempting to sell a small amount of heroin to an undercover officer. He died in jail 15 hours later after guards reportedly ignored his pleas for medical help.

A surveillance video from 2013 -- just now released by The New York Times -- shows corrections officers left Mercado on the floor for three minutes after he collapsed. He is also seen stumbling and carrying around bags of his own vomit before his death.