Fire crews respond to call of a distressed boater at Lake Whitehall. PHOTO/JOHN CARDILLO

A man rescued at Lake Whitehall was pronounced dead Thursday night, according to a press release from the town.

Police and fire crews were called to the reservoir around 5 p.m. about a boater in distress.

According to the press release, witnesses reported an adult male experiencing a medical issue on the water. Other boaters assisted him by calling 911 and moving him onto an island in the reservoir while they waited for help to arrive.

Hopkinton Fire officials, aided by Westborough firefighters, put boats in the water to reach the island. The District 14 Dive Team also was on hand to provide additional assistance.

Emergency personnel took over care of the distressed boater and returned him back to the shore. From there, he was transported to a regional trauma center, where he later was pronounced dead.

The press release indicated this incident was medical in nature, and no additional information was expected to be released.