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On Monday, 49-year-old Carlos Vieira of Lawrence was taken into custody in Haverhill after a month-long investigation.
Vieira is charged with two counts of aggravated rape of a child and two counts of indecent assault and battery on a child under 14.
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Vieira, who has been a Lawrence police officer since November 1999, was placed on administrative leave "immediately after the department was notified of his arrest by the Massachusetts State Police," Lawrence Police Chief Roy Vasque said in a statement.
"This is an ongoing investigation, but the allegations against Officer Vieira are extremely troubling, and we take them very seriously," Vasque said.
Authorities began investigating in January when the victim's mother contacted the DA reporting that her 13-year-old son allegedly met Vieira using a social media app. She says Vieira allegedly engaged in sexual activity with him in the summer of 2018.
Vieira is
scheduled for arraignment on Tuesday in Lawrence District Court.