MONTGOMERY COUNTY, Texas -- A 13-year-old girl was arrested overnight after she allegedly used Facebook to make threats to take out an entire town.

Deputy constables said the girl wrote about killing every single person in Splendora.

With a little help from Facebook, investigators were able to track her down.

Kids are gonna be kids, said Constable Kenneth Hayden with Montgomery County Precinct 4. They re going to make mistakes. This is a very serious mistake, and we re hoping this person is gonna learn from this and be able to move on with her life.

Authorities said the girl had been staying with relatives. She s facing felony charges for making a terroristic threat.

Deputies seized several computers and other electronics from the family's home.

It was Saturday when KHOU 11 first reported that someone was posting frightening messages to kill everyone in the town of Splendora giving the date of Sunday, July 13.

Threats were also made against Cristian Beasley, young boy in the community who is fighting cancer.

Last year when we first told you about the 12-year-old who was fighting leukemia by using a robot named Watt that goes to elementary school for him, someone named Watt was watching that story too and decided he needed to pay a surprise visit.

J.J. Watt saw the story and decided Cristian was someone he had to meet.

Investigators said the Facebook account used to make the threats against Cristian and the Spendora community was either fake or hacked.

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