According to a Greek Police (EL.AS) announcement, on the explosive device sent and neutralised “a genetic type of a man was detected, that is identical with the same genetic type of a man, that was detected in items that were found and confiscated in a car that Christodoulos Xiros used for his transfer-escape from Thessaloniki to Athens on 05-01-2014”.

The “Conspiracy of Cells of Fire” group claimed responsibility for the sending of the parcel in a proclamation posted on the internet.