Gardai have joined the PSNI in a cross-border search for a Lithuanian man who is wanted on a European arrest warrant for murder in his home country.
The man was named last night by the PSNI as 36-year-old Giedrius Dubosas, who is being sought in connection with inquiries into the murder of a man in Lithuania in 2005.
He is thought to have been involved at one stage with a criminal gang operating in northern and mid-Monaghan.
Gardai think he was closely associated with members of a Lithuanian gang who had been active in the Ballybay area in the past.
However, he has not been seen there for some time.
The PSNI said last night that Mr Dubosas, who uses the nickname "Sabonis", could either be living in Co Monaghan or either Tyrone or Armagh.
He is described by detectives as 6ft 5in tall, weighs around 15 stone and has green eyes.
An appeal for information on his current whereabouts was featured last night on the BBC's 'Crimewatch' programme and his description was also circulated to other media outlets.
Officers on both sides of the Border have said they are anxious to locate and arrest Mr Dubosas on the warrant.
A Lithuanian crime gang was investigated in the past by gardai in connection with an extortion racket, as well as attempts to collect clothing door to door by pretending to work for charity organisations.
Instead, the clothing was being sold in Lithuania by a criminal network.