The Nigerian government has accused former President Olusegun Obasanjo of attempting “to undermine the electoral process” and “incite violence” after he cast doubt over the veracity of Saturday’s election.

“Though masquerading as an unbiased and concerned elder statesman, former President Obasanjo is in reality a known partisan who is bent on thwarting, by subterfuge, the choice of millions of Nigerian voters,” Information Minister Lai Mohammed said.

“What is expected from a self-respecting elder statesman are words and actions that douse tension and serve as a soothing balm.”

In a statement released on Monday night, Mr Obasanjo said tension was building up in the country amid questions about whether the elections had been fair and transparent.

The 85-year-old asked President Muhammadu Buhari to “let all elections that do not pass the credibility and transparency test be cancelled”.

But Mr Mohammed countered, saying that Mr Obasanjo was not “qualified” to advise Mr Buhari. The information ministry tweeted the statement.