Chittoor: Tirupati Airport Authority officials on Wednesday seized liquid RDX from four passengers. The suspects were going to Delhi.
Police officials started interrogation and came to know that the suspects were on a business trip to Railway Koduru in YSR District and were caught at Tirupati airport on their return journey.
Airport officials became suspecious on behaviour of these four passengers and started questioning whereabouts of them. The officials found RDX when they searched their luggage. Further investigation is on.