Rajan, who was arrested by Indonesian police on October 26, reached New Delhi in a special aircraft around 5.30 am at Palam airport from where he was taken to Central Bureau of Investigation (CBI) headquarters, escorted by special commandos and SWAT team, police said.
The aircraft carrying Rajan, along with a team of CBI officials and others, had departed for India around 8 p.m. (local time) from Bali, Indonesia on Thursday.
Rajan, 55, reached CBI headquarters around 6 a.m. All routes leading the the CBI headquarters have been sealed by Delhi Police.
Besides, the security of CBI headquarters, which is looked after by the Central Industrial Security Force (CISF), has been increased.
Rajan, 55, who has been absconding from India for two decades was arrested by Indonesian police on a request of CBI in Bali on October 26, following a tip-off by the Australian Federal Police.
Rajan has been kept in a lockup in CBI headquarters, sources said, adding that he will be taken for medical examination soon.
The mafia don will be presented before a special CBI magistrate very soon after his medical examination, who will officially hand over his custody to the investigating agency, sources said.