The RUC is investigating a fresh outbreak of attacks on homes in Northern Ireland.
Sinn Fein blamed the loyalist Ulster Defence Association for firing shots at the north Belfast home of a former republican prisoner.
Martin Meehan Jr escaped hurt when the house, at Farrington Court, Ardoyne was sprayed with gunfire. One bullet shattered a front window.
A Sinn Fein spokesman said: "It is part of the escalating campaign by the the UDA and people are very concerned."
In Garvagh, County Derry, a 70-year-old man carried a pipe bomb out of his home after the device was thrown through a window.
The home of his next door neighbour at Kinnard Park, a woman aged 60, was also attacked with a bomb.
Garvagh is close to Coleraine, County Derry, where loyalists have been involved in a sustained campaign of sectarian attacks on Catholics.
Northern Ireland Assembly member John Dallat, of the SDLP, said: "Only a small number of people are involved and they don't have the support of the wider community." "But the big worry is somebody is going to get killed or badly injured." In north Belfast, a device caused blast damage when it exploded in an unoccupied house at Lothair Ave.
The new loyalist attacks took place amid heightening fears of a developing campaign by dissident republicans opposed to the peace process.
Yesterday's failed mortar bomb attack on Ebrington Barracks, County Derry, was the fourth within a week.
PA