Manish Sisodia: India anti-corruption crusader fighting to clear his name

Manish Sisodia, Delhi's former deputy chief minister who's now under arrest on corruption charges, resigned on Tuesday night from all his ministerial posts. In his resignation letter, he said he would stay away until the charges against him were proven false.

One of India's most high-profile politicians, Mr Sisodia only entered politics a decade ago but is second in command of the Aam Aadmi Party (AAP), which governs the Indian capital and is vying to become a key opposition force ahead of next year's general elections.

He has played a major role in increasing the party's footprint not just in Delhi but across other states, most recently in neighbouring Punjab where it won a resounding mandate last year.

So it's no surprise that Mr Sisodia's arrest on Sunday over alleged irregularities in a liquor sales policy in Delhi set off a political storm.

Mr Sisodia's critics have cited the arrest to question his credibility - corruption is a sensitive issue for the AAP, as the party emerged from a major movement against it.

But Mr Sisodia, 51, and the AAP say he's done nothing wrong and are challenging his arrest by the Central Bureau of Investigation (CBI) in the Supreme Court.

They allege that India's governing Bharatiya Janata Party (BJP) is targeting its opponents, which the BJP denies.

Mr Sisodia, a former journalist, is often seen as a trusted lieutenant to Delhi's Chief Minister Arvind Kejriwal, who is AAP's most popular leader.

But he is best known for his work as Delhi's education minister - and credited with overhauling a school system which had long been hobbled by poor infrastructure, mismanagement and lack of resources.