Bullets have been sent in the post to three SDLP councillors who are members of a County Down policing body, the party has said.
The party says bullets were sent to three councillors in Newry
The packages were addressed to the District Policing Partnership members at SDLP premises and council offices in Newry.
The bullets were taped to a sympathy card which said they were from the Real IRA.
In recent months, there has been a series of threats and attacks on members of policing partnerships across the province.
Councillor Michael Carr said although the threats were distressing, it would not deter them from their work.
"We are appalled and very annoyed," he told BBC Radio Ulster on Saturday.
"There's not an awful lot we can do about it, if these are the tactics these people want to use.
"We are not in a position to control that, but it certainly makes us more aware."
District policing partnerships were set up across Northern Ireland under reforms initiated by a commission headed by former Hong Kong Governor Chris Patten and implemented by the government.
The partnerships are made up of councillors and members of the local community, who work alongside the Police Service of Northern Ireland's 29 District Command Units in trying to meet local community policing needs.