The two leaders along with four other MLAs were expelled from the primary membership of the party.
Announcing the party's decision on Tuesday, Feb 2, General Secretary Mohan Singh said that the party's image has taken a beating due to Amar Singh and Jaya Prada.
This comes after Amar Singh softened his stand towards BSP supremo Mayawati and UPA chairperson Sonia Gandhi after he resigned as the General Secretary of SP and also from the membership of party's parliamentary board citing health reasons on Jan 6.
Amar Singh, who is a Rajya Sabha MP, has one year's term left. Jaya Prada, who was elected to the Lok Sabha in 2009 from Rampur, has four more years' term left.
"We are taking legal opinion on seeking their expulsion from Parliament," Mohan Singh added.