Deputy leader and four politburo members of the Patriotic Union of Kurdistan (PUK) quit their Kurdish party headed by Iraqi President Jalal Talabani, the local television of Sharqiya reported on Saturday.
"Kosrat Rasul Ali, deputy head of the PUK and the party's politburo chief, along with four other politburo members resign from their party for political differences," the channel said.
Ali is also Vice President of the Regional Kurdish Government (KRG), which is headed by President Massud Barzani, who is also head of the Kurdistan Democratic Party (KDP), one the most powerful two parties in the Kurdish region.
The resignation apparently came as a result of debate over fighting corruption and improve democracy.
Early last year, four politburo members were expelled from the PUK after they demanded the party's top leadership to make a way for new blood.
Also in 2006, Nawshirwan Mustafa, a co-founder of PUK resigned party's deputy secretary general following an internal power struggle.
President Talabani left Baghdad to Sulaimaniyah in northeastern part of the country to get involved in the political debate that threaten the party's unity, the channel said.