Panaji, Sep 15 (IANS): The Central Bureau of Investigation (CBI) Thursday questioned National Students Union of India (NSUI) Goa president Sunil Kavthankar in connection with the police-politician-drug mafia nexus probe.

Kavthankar earlier this year petitioned the Panaji bench of the Bombay High Court seeking a CBI probe into the case. He also accused police officials, including investigating Crime Branch officer Chandrakant Salgaonkar, of links with the drug mafia.

"I have told the CBI officers what I have been saying all these day. I have also given them the details of my petition filed before the high court," Kavthankar said after he met CBI officers at the federal agency's office in Bambolim, on the outskirts of Panaji.

The NSUI leader's anti-narcotics campaign had raised the hackles of the Congress leadership, with home minister Ravi Naik's son Roy being linked to the drug mafia by the international media. The Congress leader has rubbished the allegations.

The leader of the Congress' students wing in Goa had been brutally assaulted by unknown people in February, days after he started his campaign for a CBI probe into the drug nexus scandal in which two Israeli drug dealers and seven policemen have been arrested.

The nexus which had created a sensation here was first being probed by the Crime Branch but was later transferred to the CBI.