NEW YORK - Concern is growing over a methadone clinic that's set to open in Harlem later this year.

Residents gathered Thursday to protest the transformation of a townhouse on St. Nicholas Avenue into a drug treatment center.

They say the social service organization Argus Community hid its plans until it was pressed for answers at a community board meeting.

"We have jail facilities here, we have halfway houses, we have all kinds of things in this neighborhood," said one resident.

"I'm concerned about the safety of the neighborhood, we can come and go at any time," noted another resident. 

"We want in a residential neighborhood, you want residents. You don't want people coming and going. That's what this building would be," said Manhattan Borough President Gale Brewer.

NY1 reached out to Argus Community for a response but have not heard back.