PLAINFIELD, Conn. (WTNH) — Police have traced the threatening Snapchat message that led them to increase security in the school district Wednesday back to a student in Pennsylvania.

In a Facebook post late Tuesday night, Plainfield Police said the department received numerous calls about a Snapchat message mentioning a shooting that would take place Wednesday at “phhs.” The post said they were working with multiple law enforcement partners in other states to determine the origin of the threat.

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On Wednesday, an official with Plainfield Public Schools sent News 8 a letter from Superintendent Paul Brenton that families in the community received regarding the situation. In that letter, it says Plainfield Police along with other agencies traced the image back to a student at Penn Hills High School in Penn Hills, Pennsylvania, adding that the individual responsible for the social media posts is currently in police custody there.

Police said there has been no credible threat made directly to any school within Plainfield, Connecticut. The letter says schools in the district will be open today with additional safety protocols in place.