Police have removed IRA signs from a republican area in Derry.
It is claimed masked officers used ladders to scale lampposts in the Creggan estate early on Friday.
A police spokeswoman said officers from the Terrorism Investigation Unit took down the signs.
The signs were visible during a controversial Easter parade linked to hardline party Saoradh last month. Police Land Rovers were attacked by youths throwing petrol bombs and other missiles during the march, which included a masked colour party.
Read More: Condemnation amid violent scenes during Derry parade
In the past police have been criticised for their reluctance to remove loyalist flags from lampposts and other material, including effigies, from Eleventh Night bonfires.
Footage appears to show a sign being removed under the cover of darkness.
SDLP Policing Board member Mark H Durkan said the "signs are not wanted by the vast majority of people in Creggan and they ghettoise the area".
"If the police are responsible for the removal of these signs they should explain what law was being broken and demonstrate consistency in their approach to the removal of offensive items from street furniture and displays," he said.
Saoradh spokesman Paddy Gallagher said that the signs were put up in the Creggan area and various parts of Derry almost 18 months ago and he accused the police of "raising tensions in Derry as the summer approaches."
"We urge all republicans, including young people, to be mindful of this," he said.
A police spokeswoman said: "Detectives from the Terrorism Investigation Unit, investigating offences under section 12 of the Terrorism Act 2000, removed signage in the Creggan area of Derry in the early hours of Friday 12 May."
