Police: Similar bomb threat 5 days before one against Jetstar Japan plane

Investigative sources say Narita Airport, near Tokyo, received a bomb threat five days before another one that forced a passenger plane operated by budget carrier Jetstar Japan to make an emergency landing.

The plane landed at Chubu Airport, central Japan, on Saturday following a phoned-in claim that a bomb had been planted on the aircraft, which was heading from Narita to Fukuoka Airport in southwestern Japan.

No explosives were found on the plane. Police are investigating the case on suspicion of obstruction of business.

Police say a similar call was made to the airport on January 2, with a threat to blow up a Taiwanese passenger plane bound for Narita from Taipei, and a demand for money.

The aircraft was searched after it arrived at Narita. No explosives were found.

Police say both calls were in English, and are believed to have been made from Germany.

They are investigating possible links between the two incidents.