Mallya currently holds a diplomatic passport by virtue of being a Rajya Sabha member; his term ends on 30th June, 2016.
His passport has been suspended by Ministry of External Affairs for a period of four weeks under Section 10 (3) (c) of the Passports Act, 1967. The section states that the passport authority may impound or revoke a passport in the "interests of the sovereignty and integrity of India, the security of India, friendly relations of India with any foreign country, or in the interests of the general public".
The passport authority has given Mallya a week's time to respond why his passport should not be impounded or revoked
Once his passport is cancelled, Mallya will lose the right to live in any other country or travel outside India. Once passport is cancelled, the CBI can ask Interpol to issue a notice for Mallya's arrest; the government can also write to the UK, where Mallya is believed to be living, to extradite him to India.
Under the Passports Act, Mallya has the right to appeal to an appellate authority but within the prescribed time limit
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In a similar case, Lalit Modi's passport was revoked in 2011 but he continued to live in the UK despite letters from New Delhi to UK that he be sent back as he was facing probe. Lalit Modi moved Delhi High Court which restored his passport to him in 2015, stating that the reasons for cancelling his passport were insufficient
Sources: passportindia.gov.in, cbi.gov.in

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