DENVER (CBS4) – Police from Denver have begun an investigation in Weld County after a body was discovered near some railroad tracks. They believe the remains found are that of Kenia Monge.

The stepfather of the 19-year-old from Aurora who went missing, says he thinks it is her body.

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Authorities said they were following up on a tip about Monge when they initiated their search near Interstate 76 and Keenesburg.

The body was found about 2 miles southwest of Keenesburg, about 30 yards away from the tracks. Investigators say a positive identification and cause of death are still pending.

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Tony Lee is the stepfather of Monge, who disappeared after visiting a Denver nightclub on April 1. He posted this message on his Facebook page on Wednesday: “WITH GREAT GREAT SADNESS I HAVE TO REPORT TO YOU THAT DENVER POLICE HAS CALLED ME AND THEY BELIEVE THEY HAVE FOUND KENIA. I DO NOT HAVE ANY MORE INFO AT THIS TIME, THE NEW CHANNELS HAVE ALREADY PICKED THIS UP THAT IS WHY I’M TELLING YOU NOW.”

A man named Travis Forbes told police he met Monge at a bar in LoDo the night of Monge’s disappearance.

Forbes, 31, says he dropped Monge off a Denver gas station later on. She hasn’t been seen since.

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Travis Forbes (credit: Fort Collins Police)

Forbes was arrested by police in Fort Collins on July 11 in a separate case. They believe he is responsible for both the July 5 fire at an apartment complex there that was likely intentionally set and the assault on a 30-year-old female resident.