Knew this was coming.

A popular stretch of beaches in Massachusetts will remain closed to swimming Monday because of a deadly shark attack over the weekend. A local swimmer died Saturday after being bitten by a shark. The attack happened on a stretch of the Cape Cod National Seashore. It was the first deadly shark attack in Massachusetts in more than 80 years, reports CBS News' Nikki Batiste. At about noon on Saturday, the swimmer was riding the waves on a boogie board with a friend about 30 yards into the water off Newcomb Hollow Beach in Wellfleet. That's when one witness, film artist and professional surfer named Joey says he saw what looked like a 10- to 12-foot shark attack the swimmer. More than a dozen beachgoers scrambled to help carry the swimmer to safety after he was bitten on both legs. "I sprinted back up the beach," said Joey, who witnessed the attack and tried to save the poor guy's life while "Screaming like a lunatic: 'Call 911! There's been a shark attack! I knew something was not feeling right about the water that day.'"