The anti-graft boss said the investigation followed an intelligent reports and petitions.
Mr Obi described the situation as troubling.
Gunmen on Tuesday night attacked a Christ Apostolic Church in Eda Oniyo Ekiti, Ilejemeje LGA of Ekiti, killing a pastor and kidnapping scores of worshippers.
Former vice-presidential candidate in the 2023 election, Datti Baba-Ahmed, has announced his plans to dump the Labour Party for the Peoples Redemption Party.
“We are fast becoming a nation where human life is treated as expendable,” he said.
The police command in Kwara has raised the alarm over the proliferation of fraudulent schemes targeting point-of-sale operators.
The ADC spokesperson further expressed concerns over “Nigeria’s shrinking democratic space under the All Progressives Congress”.
Scores of residents were killed after terrorists invaded Guyaku and Telabala communities in Gombi LGA of Adamawa on Sunday.
The president reminded South Africans of the debt the country owed to the rest of the continent.
“Saraki and others have an undoubted constitutional right to defend the charges against themselves, and we hope they will exercise their right,” the Kwara government said.
