The BJP's Purvanchali leader and two-time former MLA from Kirari Anil Jha joined the Aam Aadmi Party (AAP) in the presence of party supremo Arvind Kejriwal on Sunday.

The development came a few hours after the AAP suffered a big blow as its Najafgarh MLA and Transport Minister Kailash Gahlot quit the party.

Kejriwal welcomed Jha to the AAP at party headquarters near Mandi House and dubbed him as one of the "biggest" Purvanchali leaders in Delhi politics. He will boost the AAP not only in Kirari but all over the city, the AAP supremo said.

Party sources claimed that Jha could replace the sitting AAP MLA from Kirari, in the Delhi Assembly polls due in February.

Jha lauded Kejriwal, saying he was influenced by his personality and the work done by the AAP government to improve the lives of Purvanchali people living in unauthorised colonies of the city.

Kejriwal alleged that while the AAP government built 10,000 km of roads and streets, laid 6800 km of sewer lines and provided piped water in 1,650 unauthorised colonies, "the BJP did nothing".

"I want to ask the BJP and its leader Amit Shah, why should Purvanchali people vote for the party. I challenge them to tell one thing they did for the Purvanchali people in Delhi. They promised the registry of properties in these colonies but not a single one could be done in five years," he said.

When asked by reporters Kejriwal, however, refused to comment on Gahlot's resignation from the AAP.

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