A Massachusetts golf course groundskeeper who drove a lawn mower into a water hazard and got stuck under it has drowned.

Authorities say Greg Misodoulakis was killed Friday after becoming trapped by the lawn mower in five feet of water at an 18-hole course in Lakeville, 40 miles north of Boston.

A co-owner at the Back Nine Club says nobody saw the 18-year-old groundskeeper drive into the manmade hazard.

Plymouth district attorney's office spokeswoman Bridget Norton Middleton says the teenager was pulled from the water after about 20 minutes. She says it appears to be an accidental drowning.

The 18-year-old was a freshman at the University of Massachusetts at Amherst.

A groundskeeper at a Plainsboro, N.J., golf course survived a similar accident Aug. 23 when rescuers used a backhoe and chains to pull a lawn mower off him.