The Presbyterian minister who helped to broker the loyalist ceasefire, the Rev Roy Magee, is offering to act as a mediator in an attempt to resolve the ongoing dispute between the UVF and the UDA.
Rival loyalist gangs were involved in violent confrontations in Derry at the weekend after Mr Glen Greer, a Protestant, was killed in a car-bomb explosion in Bangor, Co Down, on Saturday.
Tensions have increased between the two loyalist paramilitary organisations since the breakup last week of the umbrella group, the Combined Loyalist Military Command (CLMC), after disagreements over strategy.
Mr Magee described the situation as "worrying" and said: "If required, I will step in to act in some form of negotiation."
The DUP yesterday warned of further loyalist violence and accused the British government of lacking the will to combat the paramilitaries.
The fringe loyalist parties have signed up to the Mitchell Principles of non-violence and remain at the Stormont talks. When asked if recent loyalist violence could lead to the expulsion of the parties, the North's Security Minister, Mr Adam Ingram, said that this was a matter for the participants in the talks.
Meanwhile, the Sinn Fein MP, Mr Martin McGuinness, has expressed concern at the Bangor bombing. "It is accepted in most circles that there was UDA involvement in this murder", he said. "It is obvious that the loyalist organisations are coming apart at the seams through in-fighting and factionalism. I would advise all nationalists, particularly in isolated areas, to be extra vigilant."
The collapse of the CLMC, which is regarded as having acted as a restraining influence and was vital to securing the loyalist ceasefire, has caused concern to many in the nationalist community.