Mourners of a Rowan University murder victim have doubled the reward for information about his death.

Rowan sophomore Donny Farrell, 19, was beaten to death on campus in October. Gloucester County Prosecutor Sean Dalton announced a $100,000 reward for tips leading to the arrest and conviction of Farrell's killers Wednesday. The victim's parents were on hand for the announcement and had a message for anyone watching the news conference.

"Our family is making an appeal for your help," said Kathy Farrell, the victim's mother.

The death was captured on surveillance video and shows three men accompanying Farrell's attackers. Dalton says it is imperative for those witnesses to step up and help the investigation.

"They need to come forward. They need to help law enforcement, but most importantly, they need to bring some closure," said Dalton. "Not only to us, but also the Farrell family."

The reward is being offered as a joint effort by Rowan University, the Gloucester County Prosecutor's Office, Farrell's family and friends and the Gloucester and Morris County sheriff's departments.

Related information: Rowan U. student dies of injuries after campus attack Sketch released of Rowan U. murder suspect