SANDWICH, Mass. — Cape Cod authorities appealed Friday for the public’s help to identify the decapitated, limbless torso of a man found wrapped in a tarp on a Sandwich beach this week.

Cape and Islands District Attorney Michael O’Keefe said the remains are that of a black man believed to have been around 6 feet tall and weighing 220 to 230 pounds. He said the body has an old surgical scar on the right side of the abdomen, but no signs of serious disease.

O’Keefe said the man likely was killed elsewhere recently and dumped at Town Neck Beach, where a passer-by found it Wednesday night.

He said a dark blue T-shirt with the name of a business, Cranston Windustrial, was also found at the scene. The shirt has promotional messages for the Warwick, Rhode Island, business. O’Keefe said the company gave away thousands of the shirts, made between six and eight years ago.

O’Keefe said the body was attached to a blue moving dolly. He said authorities are appealing to people who might remember someone of the same description wearing the shirt or a similar dolly being missing.