An attempt to set fire to two vehicles belonging to a relative of a Quinn Industrial Holdings (QIH) director was made at the weekend.
It happened outside a house at a location outside Derrylin in Co Fermanagh.
The incident occurred in the early hours of Saturday morning.
The attempt was captured on CCTV.
The PSNI say they are investigating the incident.
Liam McCaffrey, chief executive of Quinn Industrial Holdings, has condemned the attack.
He said: "Following the savage kidnap and torture of Kevin Lunney last September this resumption of violence and intimidation is deeply concerning and shows that the perpetrators will stop at nothing until those directing their activities are brought to justice.
"We are enormously relieved that this further attack, again outside a domestic home, was contained without loss of life or serious damage."
Four men have been charged with the abduction and false imprisonment of Mr Lunney.
The 50-year-old was driving from work to his home in Kinawley, Co Fermanagh when he was attacked on September 17th last.
He has previously described how he was beaten and tortured by three men in an attack that lasted for about two and a half hours.
He also said he had the letters 'QIH' cut into his chest with a Stanley knife.
The kidnappers then told Mr Lunney they had been watching him, his family and the other Quinn directors.