FORT WORTH, Texas (AP) — Fort Worth police are calling the death of a suburban teenager inside a grain silo a tragic accident.

Officer Daniel Segura says 17-year-old Monica Hernandez, of Haltom City, apparently had been hanging around the silo with some friends Saturday.

Police called the fire department for help after getting a call that someone was trapped on the roof of the silo. Authorities were unable to find anyone after searching for about an hour but police were called again hours later after relatives found Hernandez's body in the basement of the structure.

Fire Department Lt. Kyle Falkner says holes in the floor and missing stair steps make the silo treacherous for anyone.

A medical examiner will determine if she fell five or six stories to her death.