Prisoners wearing Hazmat suits bury caskets in huge trenches on New York's Hart Island amid speculation it's become a burial site for coronavirus victims as city's death roll rises to 4,260 

A refrigerated truck has been spotted on New York's Hart Island while prisoners wearing hazmat suits and other protective gear continued to dig mass graves - sparking speculation coronavirus patients may be being buried there.   About a dozen prisoners were seen digging the graves on Thursday as at least one refrigerated truck was brought onto the island. Prisoners from Rikers Island are regularly brought over to dig graves on Hart Island but they are normally dressed in their prison uniforms. The majority of those digging on Thursday were dressed in white, head-to-toe hazmat suits amid the coronavirus pandemic.  The refrigerated truck that was brought onto the island is the same as those currently parked outside hospitals across Manhattan as part of makeshift morgues set up to deal with the number of people dying from the coronavirus outbreak. Authorities have not officially confirmed if coronavirus patients are currently being buried on Hart Island despite morgues overflowing across the city and the death toll continuing to rise.