Speaking on Tuesday at the People's Democratic Party (PDP) presidential campaign rally in Lafia, Nasarawa State Capital, the director-general of Jonathan's campaign organisation, Senator Ahmadu Ali, lambasted Maku for dumping the PDP for the All Progressives Grand Alliance (APGA).
Maku, who is the gubernatorial candidate of the APGA in Nasarawa State, had allegedly claimed that Jonathan encouraged him to join the party.
But Ali said that the president never asked anybody to join any party to canvass for him.
Accusing Maku of plotting to smear Jonathan's image and portray him as a religious bigot,
Ali said having used the PDP's platform to rise to stardom, the former information minister, out of greed, jumped the ship to team up with the APGA.
According to Ali, Maku's ambition will never come into fruition because he lacks the needed integrity to realise such.
The president also publicly disowned Maku, clarifying that at no time did he encourage him to defect from the PDP to another party.
Jonathan explained that the PDP was against anti-party activities, saying as the leader of the party, he would never flout its rules and regulations.
In the same vein, Senate President Senator David Mark said Maku was a liar for claiming that he was planted in the APGA to run for governorship.
The Senate president urged the APGA gubernatorial flag bearer to apologise and retrace his steps.
"Don't be deceived by any son of yours that says he has been put in another party to run for the governorship. Mr. President is PDP from top to bottom", Mark said.