EFCC said the former Governor started the monthly withdrawal when he was Chief of Staff to convicted former Governor of the state, Orji Uzor Kalu.
The investigation, according to sources, was extended to his family members to ascertain their link and culpability.
Theodore Orji’s first son, Chinendum, who is currently Speaker of the Abia State House of Assembly and his brother are now frequent guests at the EFCC headquarters where they are explaining what they know about the fraudulent withdrawals.
EFCC has been looking into various financial malfeasance of Orji following a petition by an anti-graft group, Fight Corruption: Save Nigeria Group.
It was alleged that the various withdrawals were diverted to personal use.