Nigeria's Supreme Court has started reading out its ruling on whether or not to uphold the disputed election victory of President Bola Tinubu.

His two main challengers, Atiku Abubakar of the Peoples Democratic Party and Peter Obi of the Labour Party, are seeking to overturn the February presidential election, alleging that it was marred by irregularities.

The Supreme Court had 60 days to pass its judgement. But it has decided to fast-track the ruling after hearing the arguments of the challengers on Monday.