Officials in the Susquehanna Valley School District and local law enforcement are investigating perceived threats that have been reported on social media.
Authorities say two Broome County teenage sisters have been missing for 280 days.
State police last May announced investigators were trying to locate 13-year-old Shaeleen Fitch-Fortner and 15-year-old Ky-Lea Fortner.
At that time, officials said the sisters had been living with a foster family on Stevens Road in the Town of Binghamton...