Mayawati is keen to tie up with Congress ahead of the assembly polls later this year and the 2019 Lok Sabha election. (File photo)

Bahujan Samaj Party (BSP) supremo Mayawati has expelled party vice-president and national coordinator Jai Prakash Singh from his post with immediate effect after he called Congress president Rahul Gandhi unfit for being India's prime minister.

Singh had said Rahul Gandhi is unfit for being the country's PM due to Sonia Gandhi's foreign origin.

He had given this statement on Monday during a speech.

"I came to know about BSP national coordinator Jai Prakash Singh's speech in which he made personal remarks against leadership of rival parties [Rahul Gandhi]. It is his personal opinion. So he has been removed from his post with immediate effect," Mayawati said.

I came to know about BSP national coordinator Jai Prakash Singh's speech in which he spoke against ideology of BSP & also made personal remarks against leadership of rival parties. It's his personal opinion. So,he has been removed from his post with immediate effect: Mayawati pic.twitter.com/oZXIkdQvJT ANI UP (@ANINewsUP) July 17, 2018

She added that Singh's speech was also against her party's ideology.

ALSO READ | Country facing undeclared emergency for last 4 years: Mayawati

In his speech during the BSP's coordination committee meeting in Lucknow on Monday, Singh said Rahul Gandhi can never succeed in Indian politics because he has "foreign blood in his veins".

He said: "There would have been some hope if Rahul Gandhi had cared to learn something from his father [former PM Rajiv Gandhi]. He has learnt everything from his mother [Sonia Gandhi], who is a foreigner. Foreign blood flows in his body. Because of this, I can say with confidence that he can never succeed in Indian politics."

The BSP meanwhile is learnt to have decided that it will project Mayawati as its prime ministerial candidate for next year's Lok Sabha election.

In his speech, Singh said India's prime minister will not be decided on the basis of birth (an indirect reference to Rahul Gandhi dynastic legacy), but by ballots.

ALSO READ | BSP workers vow to make Mayawati the PM

ALSO WATCH | BSP open to alliance only if it gets fair seats: Is anti-Modi block just a 'Maya'?