The independent Mayo TD Jerry Cowley has called for an investigation to establish if his phone is being tapped by gardaí.
He said he had raised the matter with the Minister for Justice, Michael McDowell, and got what he described as a 'less than satisfactory reply'.
He said his suspicions that his phone might be being tapped had been raised by 'a series of unusual coincidences'.
But he declined to give any further details of these. He said: 'I want to know for certain if my phone is being tapped'.
Deputy Cowley has been closely associated with the Shell to Sea campaign which opposes the current Corrib Gas pipeline plans in Co Mayo.