KATHMANDU, Dec. 4 -- The faulty construction of a heliport in Bhaktapur's Nalinchowk has dragged top officials of Nepal's aviation sector regulator into a court case over corruption charges.

The Commission for the Investigation of Abuse of Authority (CIAA) on Wednesday filed graft cases against Director General of the Civil Aviation Authority of Nepal (CAAN) Pradeep Adhikari and five others on alleged foul play linked to the construction of the heliport which has now turned defunct due to safety concerns.

The anti-graft body detained Adhikari on charges of alleged irregularities in the project and filed a case at the Special Court. Others charged in the case are former director of the CAAN Murari Bhandari, manager of CAAN Nal Bikram Tha...