The Porter County Sheriff's Office in Indiana is investigating a case involving four juvenile runaways, who could possibly be heading to South Florida.
The three girls are sisters and have been missing since the early morning hours of April 11 from their residence in Center Township.
Authorities said Briana Conners, 16, Haley Conners, 15, and Madelyn Conners, 13, took their great grandfather's minivan, a red 2008 Dodge Caravan.
All three girls are unlicensed and their destination at this time is unknown, but authorities believe they could be en route to the Miami area.
The minivan has Illinois plates with tag number: A644395.
The girls are believed to be in the company of Haley's boyfriend, Dylan Sadlofsky, 15. Also recently reported missing is their friend, Trinity Castilleja, 14.
Anyone with information on the whereabouts of these teens is urged to call Porter County authorities at (219) 477-3102.