The four men were charged with possession of firearms and ammunition.
Two of the men charged with the possession of firearms and ammunition in Offaly last week have been remanded in prison.
Four men were arrested in Clara last Wednesday, after being intercepted by the Garda Emergency Response Unit.
22 year old Hugo Henrique Rodgiures and 34 year old Jefferson dos Santos, both of Inny Court, Ballymahon, Longford, appeared before Cloverhill District Court in Dublin today.
They've both been remanded in prison until June 17th.
Sergio Machado Filho, aged 36 and with an address in Temple Bar, Dublin also appeared in court and was remanded in custody until June 17th; while 29 year old Ildomar Cabrar de Silva was remanded in custody until June 10th.
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