John Murphy of Seaview Avenue, Carrigaline appeared before a sitting of Cork District Court in the past hour.
John Murphy was arrested in Passage West after 8am on Saturday morning and was brought to Gurranabraher Garda Station for questioning.
Detective Garda Ian Breen told the court that he charged John Murphy with the murder of his brother 27 year old Shane Murphy and the attempted murder of his father 75 year old Weeshie Murphy in the early hours of this morning.
Murphy made no reply when the charges were put to him.
John Murphy was also charged with two lesser charges and defence solicitor Frank Buttimer said he would not be applying for bail on those charges, but that he would be making an application to the High Court for bail in respect to the murder charge.
Judge Olann Kelleher remanded Murphy in custody until next Monday when he will appear via video link.
He further ordered that Murphy receive any necessary medical treatment while in custody.
