SAYREVILLE – Authorities are offering a reward to anyone who provides information leading to the arrest of a suspect in the killing of a 17-year-old Sayreville girl 16 years ago.

Nancy Noga’s lifeless body was found facedown in the snow behind a mini-mall on Jan. 12, 1999, three days after her father reported her missing.

“While the investigation into the death of Nancy Noga is active and is continuing, Crime Stoppers of Middlesex County Inc. is asking anyone with information on the case to contact authorities,” Jim O’Neill, spokesman for the Middlesex County Prosecutor’s Office, said in a press release.

A senior at Sayreville high School, Noga had left her part-time job at a retail store on Route 9 in Old Bridge wearing a purple backpack, a purple “Arizona” jacket, dark V-neck sweater and black-and-white platform sneakers.

Five days later, a man walking his dog found her frozen body in a ravine off Ernston Road.

The reward was announced today by Middlesex County Prosecutor Andrew C. Carey, Chief John J. Zebrowski of the Sayreville Police Department and Anthony A. Caputo, chairman and president of Crime Stoppers of Middlesex County Inc.

Police have conducted 500 interviews in an effort to arrest a suspect.

In an interview last year, Sayreville Detective Sgt. Thomas Cassidy said he believes the suspect is still out there.

“We’re hoping, maybe, that someone who may have been afraid to come forward 15 years ago, even 10 years ago, might do so now,” he said. “We believe this is a very solvable case.”

Anyone with information on the case may anonymously contact Crime Stoppers Inc. of Middlesex County Inc. by calling 1-800-939-9600.

Additionally, people with information may contact Crime Stoppers of Middlesex County Inc. at its website, middlesextips.com. Text messages may be sent to 274637 (CRIMES) with the keyword ''midtip'' followed by a message.

Those who call will be given instructions on how to collect cash rewards by using a numerical code that will be recognized by a local bank, which will pay the rewards.

Anthony G. Attrino may be reached at tattrino@njadvancemedia.com. Follow him on Twitter @TonyAttrino. Find NJ.com on Facebook.