A man was killed Saturday night after he swerved off a Manorville road and struck a boulder, Suffolk police said.

The man was later identified as 64-year-old John Callas of Centereach, the department wrote in a news release.

Callas was driving north in a 2011 Ford van on Schultz Road, between Wading River Manor Road and North Street, about 10:10 p.m., when he crashed, the release said. Callas was brought to Peconic Bay Medical Center in Riverhead, where he was pronounced dead.

Specifics of the crash — such as the suspected cause and the driver’s speed — were not disclosed.

Callas’ death comes less than 48 hours after at least two other traffic fatalities in Suffolk County, including a Deer Park man killed Friday in Dix Hills after he veered into the opposite lane of traffic and crashed head-on into a tractor trailer. Also on Friday, a woman was struck and killed by a car while crossing a road in St. James, police said.

Nationwide, single-vehicle crashes represent 53% of motor vehicle crash deaths, according to the most recently available statistics from the Insurance Institute for Highway Safety. In New York State, that figure is 59%.
In 2024, 1,021 people were killed in traffic crashes in New York, 167 of whom on Long Island — 105 in Suffolk and 62 in Nassau, according to preliminary statistics from the University at Albany-based Institute for Traffic Safety Management & Research.

Check back for updates on this developing story.

: Every 7 minutes on average a traffic crash causing death, injury or significant property damage happens on Long Island. A Newsday investigation found that traffic crashes killed more than 2,100 people between 2014 and 2023 and seriously injured more than 16,000 people. To search for fatal crashes in your area, click here.