A Dublin man has appeared in court in Spain charged in connection with the murder of Gary Hutch.
The relation of a well-known Dublin gangland figure was detained as part of a joint European crackdown on organised crime between the two countries.
In a private court appearance earlier, the man was remanded in custody for further questioning.
Spanish police have been helping gardaí investigate the Kinahan-Hutch gangland feud for a number of months.
Searches were carried out in Dublin and the Marbella area on Wednesday as part of the operation.
Some €23,000 in cash was seized in Ireland, along with counterfeit documents relating to money laundering, while a yacht and Bentley car were confiscated in Spain.
Gardaí said warrants were executed with a view to gathering evidence to support a prosecution against individuals engaged in serious organised crime.
The killing of Gary Hutch is seen as having sparked the feud violence that has so far claimed the lives of 10 people.
The 34-year-old was shot dead in the Costa del Sol in September 2015.