At the time, the Lowell Sun reports Garneau was a member of the Community Opioid Outreach Program, put together by Lowell police and fire, Lowell House rehabilitation center and Trinity EMS.
"I'm astonished and deeply disappointed. I acted as soon as we were made aware of these allegations. This is not what the men and women of the Lowell PD represent. They police legally, respectfully and compassionately," Superintendent of Police Richardson said in a news release.
Garneau, who lives in Pelham, New Hampshire, is a 19-year veteran of the police department. He was released on personal recognizance, given a GPS monitor and ordered to stay away from the alleged victim.
The DA's office says the allegations came to light in January. An investigation was launched immediately, according to the office, and an indictment was handed up on June 26.