A Continental Micronesia flight carrying about 45 passengers and crew made an emergency landing at Tokyo's Narita airport on Tuesday after a strong smell of oil was detected onboard, officials said.
The Boeing 737-700 from Fukuoka in southwestern Japan bound for the US territory of Guam made an emergency landing at 1:41pm (0441 GMT) at Narita, airport official Yoshiki Kitagawa said, adding that no one was injured.
The plane was flying at 12,500 metres (41,000 feet) off Kagoshima prefecture in Japan's Kyushu island when an "abnormal smell of oil was detected," a transport ministry official said.
"It could have been the smell of fuel oil, or oil used for hydraulic pressure on machinery," he said.
"There were reports that an engine had stopped, but that was later found to not be the case," the official said, adding that the ministry was investigating the cause of the incident.