Aomori Public College opened in April 1993. In April 1995, Aomori Airport began offering regular international air service to Seoul, South Korea, and Khabarovsk, Russia; however, the flights to Khabarovsk were discontinued in 2004. In June 2007, four North Korean defectors reached Aomori Prefecture, after having been at sea for six days, marking the second known case ever where defectors have successfully reached Japan by boat. In March 2011, a magnitude 9.0 earthquake struck the east coast of Japan. The southeastern coast of Aomori Prefecture was affected by the resulting tsunami. Buildings along harbors were damaged along with boats thrown about in the streets.