Two young men are now charged with aggravated manslaughter after authorities said they admitted their earlier story about a friend shooting himself in a game of Russian Roulette was a lie.

Diquese "Dino" Young, 19, a recent high school graduate and athlete, died a week ago from a gunshot wound to the head he suffered Oct. 14, according to the Camden County Prosecutor's Office.

Morton Newman Jr., 20, and Nasir Mason, 19, were charged last week, before Young's death, with aggravated assault and other weapons charges.

At that time, Newman told police Young shot himself in the head at Newman's home when they were taking turns passing around a revolver that wasn't fully loaded, spinning the cylinder and pulling the trigger.

But in the probable cause statement filed with the new aggravated manslaughter charges, authorities said that the two men later told different, conflicting stories, each saying the other was the one who pulled the trigger without meaning to kill their friend.

Woodrow Wilson mourns the loss of “Dino”.. Words can’t express the hurt our Tiger community is feeling during these hard times. Our thoughts and prayers go out to his beloved Family. #RIPYoungKing Posted by Woodrow Wilson High School on Tuesday, October 16, 2018

Newman told investigators he and Mason had been trying to fix a jam in the gun when it fired, the document said.

"He stated the hammer on the revolver was jammed and cocked," the statement said. "At that point, Nasir Mason stated he knew how to fix the revolver. Morton Newman Jr stated that Mason held the bottom of the gun while he (Newman) held the hammer back. The revolver was pointed in the direction of Diquese Young. As Mason pulled the trigger, the hammer went forward, firing the revolver."

Mason, in contrast, said Newman and Young were "playing with a gun and practicing de-cocking the gun while it was pointed toward Young. He stated he observed Newman Jr. accidentally shoot Young... Mason denied ever touching the gun."

The prosecutor's office said Newman had his brother drive him and Young to the hospital. Authorities found them at the MD Anderson Cancer Center, which they mistook for Cooper University Hospital, they said.

Police wrote in previous court documents that they searched several locations, looking for the crime scene, because the young men were not immediately forthcoming.

They eventually found blood on the basement door of Newman's home, and inside, a revolver "lying in a pool of blood."

Rebecca Everett may be reached at reverett@njadvancemedia.com. Follow her on Twitter @rebeccajeverett. Find NJ.com on Facebook.