The flight control team at Zagreb's Pleso airport, following standard procedure in such cases, contacted their Italian colleagues and directed the aircraft to the requested destination, and then notified the Croatian Ministry of the Interior, Croatian Flight Control said in a statement on Friday evening.
The aircraft, flying en route from London to Egypt, eventually made a successful landing in Brindisi, Italy.
The pilot contacted Croatian Flight Control while flying over the Adriatic Sea, south of Split, and said that he had information that there was a bomb aboard and that he intended to land in Italy, the statement said.
French news agency AFP reported that no bomb had been found aboard the aircraft.