NORTON, MASS. (WHDH) - Dive teams are searching a Norton reservoir for a man who jumped out of a boat into the water Monday evening, officials said.

Emergency crews were gathered at the Norton Reservoir at the end of Juniper Road on Monday night. Police said three men went out on a boat around 6:30 p.m. and then one of them went overboard about an hour later.

The other two men called 911, police said. They told police they threw out a floatation device when he went into the water, but he did not resurface.

“Right now, it’s an active search, but it looked like it wasn’t an accidental fall out of the boat — he intentionally jumped out of the boat,” Norton Police Chief Todd Jackson said at a press conference.

Norton police, Massachusetts State Police, and the Norton Fire Department were still on scene as of 11 p.m.

“It is tough. It’s very dark out there. Obviously, we’re going to stay out as long as we can and as long as we deem it necessary,” Jackson said.

This is a developing news story; stay with 7NEWS on-air and online for the latest details.

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