By Evan Simko-Bednarski and Eli Watkins, CNN

(CNN) -- The West Point Military Academy said Thursday morning there had been "an accident in the vicinity of the Camp Natural Bridge training site."

The academy said on Twitter that emergency vehicles were responding early Thursday, and Katie Felder, a spokeswoman for West Point, told CNN there was an accident but could not immediately provide further details.

New York state trooper Steven Nevel said troopers were headed to the location of the accident as needed, and a person reached at the West Point Military Police line said an armored personnel carrier was involved in the accident.

The US military academy is located in New York, a 45-minute drive away from New York City, according to the academy.

Retired Major Gen. James "Spider" Marks, a CNN military analyst, said cadets go to the site during the summer for "vigorous military training."

This story is breaking and will be updated.