Sources in the APC claimed that the Senator has been working against the party in recent times.
According to Daily Independent, the Senator, who has been critical of the President Muhammadu Buhari administration, may have pitched his tent with the Social Democratic Party (SDP).
Sources in the APC claimed that Sani has not been working in the interest of the party in recent times.
The Senator has been having a running battle with the Kaduna State Governor Nasir El-Rufai which led to factions in the state's APC chapter.
Last Tuesday, the Kaduna Police Command named the lawmaker as a person of interest in a murder case.
Consequently, the state police commissioner, Austin Iwar, wrote to the senator asking him to appear for questioning on April 30, 2018, at the Command Headquarters in Kaduna.
Reacting to the murder case, Sani accused El-Rufai of pulling the police strings. He alleged that the Governor even wrote to the judge in charge of the case that he is interested in the case.
Pulse contacted Senator Sani over his supposed defection but no response from him as at the time of filing this report.
See some of Sani's recent tweets below: