Sanjeev Chada has been charged with the murders of his sons Eoghan and Ruairi at a special sitting of Swinford District Court.
Mr Chada had been in garda custody since he was discharged from hospital after the bodies of his sons were found in the boot of his car near Westport on Monday.
He was charged at Westport Garda Station this evening and is currently in custody at Swinford Court.
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