Kathmandu, May 26 -- The Nepali Congress is grappling with internal divisions following a high-profile raid last week at the Tribhuvan International Airport's Immigration Office, which has implicated senior officials and cast a shadow of doubt over Home Minister Ramesh Lekhak.

As the Commission for Investigation of Abuse of Authority (CIAA) looks into the alleged manipulation of visit visas, a faction in the ruling party is demanding Lekhak's resignation on moral grounds, while others, including the party establishment, are defending him, exposing a growing rift in the party leadership.

The controversy erupted after the CIAA, the constitutional anti-graft body, raided the TIA Immigration Office on May 22, based on complaints of visit vi...