He was said to have forwarded in his resignation letter to the national secretariat of the party about 10 am on Wednesday.
Tukur’s resignation came barely 24 hours after he refuted reports of his resignation.
The outgoing chairman was said to have tendered his resignation when he got wind that the National Executive Committee (NEC) of the party had resolved to pass a vote of no confidence on him.
Though details of the resignation was still sketchy, Tukur was said to have resigned following the failure of the various intervention teams to prevail on major stakeholders in the party to keep him on board.
The intervention team, led by Gen. Anthony Hananiya (rtd) was said to have met the chairman of the PDP Governors’ Forum, Governor Godswill Akpabio of Akwa Ibom State and factional chairman of the Nigeria Governors’ Forum, Jonah Jang of Plateau State.
Our correspondent gathered that while Hananiya and other peace groups were busy lobbying the PDP governors, the chairmen of the 37 PDP state chapters met at a hotel in Abuja where they passed a vote of no confidence on Tukur.
There had been intense pressure on Tukur to resign in the past few weeks with other members of the party’s National Working Committee (NWC) also joining the push.
The NWC members had openly accused Tukur of being responsible for the hydra-headed problems bedeviling the ruling party.
The frosty relations between the party chairman and the NWC members came to a climax on Monday when eight of the 12-member committee shunned an emergency meeting he called.
Sources at the party secretariat informed our correspondent that Tukur’s aides were seen on Wednesday removing their personal effects from their offices.