The family home of a Belfast man stabbed to death last year has been badly damaged in an arson attack.
The incident, carried out late on Friday night, has prompted the SDLP to warn the PSNI that an ongoing feud between two families in the Ballymurphy area of west Belfast could escalate dangerously.
The feud, which followed the stabbing of Gerard Devlin in February 2006, is linked to up to 600 incidents reported to the PSNI.
The attack on the home of Mr Devlin's widow, Áine, was carried out by up to six men, who threw petrol bombs into the living room of the house on Whitecliff Parade just before midnight on Friday.
The attackers are reported to have escaped from the area in a silver-coloured car.
There was no-one in the house at the time. The front room was badly damaged and there was also smoke damage to other parts of the ground floor.
Bernadette O'Rawe, an aunt of the murdered man, told the BBC that the family would not be intimidated.
"Áine's under massive pressure, she hasn't had time to grieve. She has six children, her partner was murdered and we've had all this ongoing conflict," she said. "Now we have this. The girl just doesn't know whether she's coming or going."
However, she added: "But I'll tell you one thing - she will not be burnt out or intimidated out. If she leaves this area, it will be of her own accord."
Local PSNI commander David Boultwood, honoured by Queen Elizabeth in her birthday honours' list last week, said the feud was affecting policing in west Belfast. Last autumn, he said the cost of policing Ballymurphy was about £1 million (€1.46 million).
The SDLP said yesterday that it had warned the PSNI that the situation in Ballymurphy was about to deteriorate.
Alex Attwood, Assembly member for the area, referred to leaflets he said were circulated in Ballymurphy about a planned picket of certain families in the estate. "During the week I advised the PSNI at high levels that the Ballymurphy situation could deteriorate quickly," he said.
"Last week, elements in Ballymurphy were circulating 'attack' leaflets, planning pickets and preparing the ground for the exclusion of families. This latest incident is part of that pattern and is disturbing and threatening."
He added: "There is no doubt that it is in part influenced by elements who think they run the area and think they can run people out of the area."
Sinn Féin councillor Marie Cush urged people with information about the attack to go to the PSNI. "The perpetrators need to be brought before the courts. This is just the latest in a litany of attacks on people and property in Ballymurphy and neighbouring districts," she said. "The victims in this serial violence are the 670 families who want to live in Ballymurphy in peace and safety, free from violence and intimidation."