The Home Ministry said it is difficult to prove whether the “counter-setting” syndicate is still operating at KLIA, but it has introduced measures to curb corruption and strengthen border controls.

“The Home Ministry, through the Border Control and Protection Agency, emphasises its concrete commitment to combating corruption and ‘counter-setting’ syndicates which can harm national sovereignty,” it said in a written parliamentary response to Kepong MP Lim Lip Eng.

It said...