Nigeria, June 1 -- A former Secretary to the Government of the Federation, Babachir Lawal, has resigned from the African Democratic Congress (ADC), alleging that the recently concluded primary elections were manipulated in favour of former Vice President Atiku Abubakar.

In a post on his Facebook page, Mr Lawal said he left the party because the recently concluded presidential primaries were "massively rigged at all levels" to favour Atiku.

Atiku had emerged ADC's presidential candidate after defeating Rotimi Amaechi and Mohammed Hayatu-Deen. Both Messrs Amaechi and Hayatu-Deen rejected the result before it was collated.

"I sense a conspiracy of silence of which I want no part. Most members of the party are behaving as if this is the no...