PEORIA ( 25News Now ) - The high-profile trial of a former Springfield deputy, Sean Grayson, charged with killing Sonya Massey, began Monday at the Peoria County Courthouse with heavy security.

What to know about the murder trial

Ahead of the trial , the Peoria County Sheriff’s office and Peoria Police Department implemented stepped-up security measures. Those measures are expected to stay in place until the end of the trial.

In April, the Peoria County Sheriff’s Office was notified that the trial was moving from Sangamon County into Peoria County due to national attention.

Monday morning, 25News crews saw security on the ground and roofs around the Peoria County Courthouse.

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Peoria County has been working w

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