LAWRENCE, MASS. (WHDH) - The trial is set to begin Monday for a Lawrence Police officer accused of raping a teen boy.

Prosecutors allege that Carlos Vieira met a 13-year-old boy on a dating app in 2018, then had a sexual encounter with him at an area park.

The teen told police he didn’t know Vieira was an officer until months later, when he saw him in uniform directing traffic. Vieira pleaded not guilty.

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