Police responded to a tip and it led to a lot guns. 

Police put a thirteen-year-old girl under arrest after receiving a tip. Someone said she was plotting a huge shooting at her school in Tonkawa, Oklahoma. Police received a search warrant for her home and found a lot of guns. They found guns, rifles, ammunition and the girl's writings. Family members don't know how she got all those guns.

Police say the girl, who lives with her parents and grandmother, also made threats about specific students at the school, and that their families had been notified. She was charged as a juvenile with making threats to perform acts of violence and is being held in a youth detention center.

Police believe she was acting alone and they're still trying to figure out a motive for the planned school shooting.

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