India, April 11 -- In a horrifying tragedy, a helicopter plunged into the Hudson River near Manhattan's Pier 40 on April 10, killing all six people, including three children, onboard. An eyewitness who saw the horror crash told the New York Post how the chopper went underwater within 'seconds'.

An eyewitness saw the chopper go down while walking along the Hudson River Greenway. 21-year-old Eric Campoverde told the outlet, "I was like, 'oh sh-'," adding, "I was walking home from work when I saw the helicopter going down at a 45-degree angle."

"Then I heard and saw a big splash. It was going fast," he continued. "It was maybe on top of the water for three or four seconds before it went under. It was fast," he recalled.

Another witness, 2...