The three-member panel led by Justice Tani Hassan, held that the findings of the tribunal were unassailable.
The National Chairman of AA, Dr Adekunle Omo-Aje, in a statement in Abuja, said the party neither had such arrangement nor was it planning to adopt any other person in place of its presidential candidate.
Adekunle Omoaje, National Chairman of AA, said in a statement that the APC presidential standard bearer, had not committed any offence that would warrant court case against him by the party.
The INEC Returning Officer, Prof Rotimi Ajayi, who announced the results of the election on Sunday at Onyadega, headquarters of the local government, said that Atule polled 8,515 votes to emerge winner of the poll.
Prof. Iyinola Oni, INEC Local Government Collation Officer for the by-election for Kosofe Constituency 2, declared the result at the collation centre in Agidi Comprehensive School, Agbonyi-Ketu at 5:35am on Sunday.
The governorship candidate on the platform of the Action Alliance in Imo, Uche Nwosu, has decried the delay in making it available to relevant parties, a judgment delivered on September 21 by Imo Election Petition Tribunal.
The party said on Thursday in Abuja that the action would be effected if INEC refused to await outcome of court cases filed against it over alleged suspension.
James Vernimbe, the National Secretary of the party, stated this in a statement on Monday in Abuja.
The Action Alliance Governorship candidate in Imo, Uche Nwosu on Friday, flagged off his campaign for the March 2, election with a pledge to endorse President Muhammadu Buhari.