HIGASHIDORIMURA, Japan -- Japanese officials are investigating the safety of foreign-made wind turbines began after a recent accident in Higashidorimura.

A 223-foot generator on the wind farm in the Aomori Prefecture fell when the concrete base cracked, The Daily Yomiuri reported. The steel rods that were meant to support it and secure it to the base were left.

Officials said the reason for the crash was still unknown but it was not likely the fall was caused by strong winds. It's designed to hold up in winds up to 134 mph, which is a high-rise building standard applied to wind turbines.

The turbine that fell was made by a Danish manufacturer and installed by a domestic company. Nearly 75 percent of the turbines used in Japanese wind farms are made overseas and 79 generators in nearby areas are also made by the same Danish producer.

Past accidents have led to updated safety regulations over the years but recent growth, investigators said, has been unprecedented and the conditions in Europe where the turbines are being produced are different than the conditions in Japan and elsewhere.