Keith Williams_cropped.jpgKeith Williams is a freshman offensive lineman for the Hawks. (Monmouth University)

WEST LONG BRANCH — A Monmouth University football player has been  arrested in the attempted armed robbery that prompted a campus lockdown Tuesday night, authorities said. 

Keith Williams, a freshman offensive lineman who played high school football in Maryland, was charged with first-degree armed robbery, Monmouth County Prosecutor's Office spokesman Charles Webster said. 

Two students reported that a man wearing a hooded black sweatshirt and a stocking mask approached them at 8:20 p.m. and pulled out a handgun, according to a statement on the university's website.

The man demanded their cell phones, but the two women turned and fled the scene, the university said. The suspect then fled to the north side of campus through an underpass.

The North Campus was placed on lockdown for about 10 minutes as police scoured the area for the weapon. Police found the weapon just before midnight.

Monmouth University officials did not immediately respond to a request for comment on Wednesday afternoon.

Classes resumed on a normal schedule on Wednesday, the university announced.