A beach on the coast of Cape Cod has been closed after a swimmer was bitten by a shark, officials said.
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The coastal town of Truro announced that Longnook Beach has been closed to swimming due to the shark attack on Wednesday afternoon.
The 61-year-old man was located about 30 yards off shore in the water when he was bitten, Truro police said in a statement.
Witnesses nearby attempted to stop the bleeding, Kerstin Peter Leitner, a graduate from the Connell School of Nursing at Boston College, told ABC News Affiliate WCVB.
"We grabbed all the towels that we could, put them on him to stop the bleeding," Leitner said.
No one in the area had cellphone service, so someone had to run to a nearby home to call 911, witness Molly Tobin, another nursing school graduate, told the station.
The victim was treated and transported to the Marconi Site helispot in Wellfleet and then flown via helicopter to Tufts Medical Center in Boston, police said.
Several shark sightings have been reported in the area in recent days, according to WCVB.
An increase in the gray and harbor seal population in the Cape Cod region has attracted great white sharks to the area, according to the station.
The incident marked the first shark attack in Massachusetts since 2012, WCVB reported. The 2012 attack also happened in Turo.
Further details were not immediately available.