A security alert is continuing at the scene of two bomb alerts in the Claudy area of Derry this morning.
The PSNI have refused to comment on reports that individuals with links to the security forces have been targeted.
Further details are expected to emerge when senior police officers address a press conference shortly after midday.
A device exploded close to the front door of a house in the Ervey Road area of Claudy, nine miles from Derry, in the early hours of Wednesday morning.
No-one was in the house at the time of the explosion. British army technical officers are at the scene examining the device.
A second device was discovered in the Learmount Road area of the village and the area remains cordoned off while police carry out investigations.
Three men, two aged 36 and one aged 28 years-old, have been arrested in connection with the incidents and are helping police with their enquiries.
The PSNI warned people living in the Claudy, Eglinton, and Waterside areas to be “extremely vigilant” and not to touch any suspicious objects. They appealed for anyone who discovers anything suspicious to contact the police immediately.
SDLP councillor Thomas Conway blamed dissident republicans for both incidents.