Kathmandu, May 25 -- Amid growing calls across the party lines for Ramesh Lekhak to step down as home minister over a visit visa scam, Lekhak has defended himself, saying he will quit politics if found guilty of the reported anomalies at the Tribhuvan International Airport immigration.

On Wednesday, the Commission for Investigation of Abuse of Authority (CIAA) apprehended Tirtha Raj Bhattarai, chief of the TIA Immigration Office, and interrogated him over the alleged collusion to facilitate the visits of Nepali nationals abroad at the behest of human traffickers.

The CIAA also carried out a raid at his office and confiscated documents and personal belongings like computers, mobile phones and related documents for investigation.

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