It was not clear on Sunday what caused Errico — who worked for the sanitation department for 19 years — to fall out of the truck.

A New York City Sanitation worker died on the job in Queens on Saturday evening, according to local officials. Richard Errico, a 19-year veteran of the department, appears to have been killed outside of the DSNY garage for District’s 11 and 13 in Douglaston, according to grisly photos from the scene.

The worker was operating a sanitation truck at the yard on Douglaston Parkway near Grand Central Parkway, when he fell out around 5:43 p.m., according to police sources.