The Japanese government has gone into emergency mode over North Korea’s plan to launch a rocket.

Japan’s Kyodo News reports that Japanese Prime Minister Yoshihiko Noda arrived at his office earlier than usual on Thursday. He was quoted as saying that Tokyo will urge North Korea to back down from the launch but will remain fully prepared against any possible emergency.

Japanese Defense Minister Naoki Tanaka also said that the Japanese military will stay on alert and do its best to prevent any unexpected situation.

The Japanese government has readied its nationwide immediate alert system, which will deliver information to every corner of the nation by satellite.