Orji, who is the son of the former Governor Theodore Orji, contested on the platform of Peoples Democratic Party, but lost to the Labour Party (LP) candidate, Obi Aguocha.
The Returning Officer, Uma Oke, said the LP candidate polled 48,199 votes to defeat Mr Orji of the PDP, who scored 35,196.
Ogbonnaya Obilor of APC had 4,042 votes, while Ogbonna Abariukwu of APGA got 2,758. Obinna Nwosu of ADC scored 2386, while Friday Chimaobi of YPP polled 1013 votes.
Patience Okorie of NNPP got 644 votes; Christian Ibekwe Christian of NRM got 68 and Nnamdi Ogbuagu of APP scored 347.