A suspected grenade has been found outside a policeman's home near Maguiresbridge, County Fermanagh.
The device was discovered in Drumeer Road at about 8pm on Wednesday.
Police said the road remained closed and a security operation in the area was continuing.
Meanwhile, a steel fence has been erected at Strand Road police station in Londonderry to protect the building from any attack by dissident republicans.
SDLP Fermanagh and South Tyrone MLA Tommy Gallagher said the Maguiresbridge incident was cowardly.
"While it is yet unclear who is responsible, their actions will be wholeheartedly condemned by everyone in our community," he said.
"Their cowardly actions - attacking a family in their own home during the Christmas period - are in stark contrast to the bravery of those who continue to serve our community in the Police Service of Northern Ireland.
"I would appeal for anyone with information as to who was responsible to bring it to the PSNI without delay."
The erection of a steel barricade at Strand Road police station follows an increase in security after a bomb exploded outside the building in August.
The reinforcements have meant the removal of parking bays nearby.