At least 14 people have reportedly been killed after a bus driving tourists to a ski resort in central Japanese Nagano prefecture veered off a road. About 40 passengers were aboard the bus.

Over 25 passengers have been hospitalized with injuries, 19 of whom remain in serious condition, Bloomberg reported.

The bus crossed into the oncoming lane and plunged off the road near the town of Karuizawa, some 120 kilometers northwest of Tokyo, according to Kyodo News agency.

More than a dozen tourists fear dead as bus plunges off road in Japan https://t.co/NhaYi8o3Dlpic.twitter.com/d8RZRYqaox — ONE News (@ONENewsNZ) January 14, 2016

The vehicle was heading from the Gunma prefecture to ski resorts in Nagano. According to a local fire department official cited by Bloomberg, the bus originally left Tokyo’s Harajuku district on Thursday night.

The cause of the crash was not immediately clear. Police said that there was no ice on the road at the time of the accident, Kyodo News reported.

20+ people evacuated from crash site w/njuries, about 120km NW of Tokyo https://t.co/JhFQdPaTKT (pic: @kinkakuji09) pic.twitter.com/Rjl1byY6WS — RT (@RT_com) January 15, 2016

The tourists on board were traveling as part of a Tokyo travel agency’s ski tour package, according to the Japan Times.

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