Photo provided by Korean Central News Agency (KCNA) on March 19, 2013 shows a drill of the People's Army of the Democratic People's Republic of Korea (DPRK). (Xinhua/KCNA)

North Korea conducted a military drill recently, according to a group of photos released by the state news agency Korean Central News Agency (KCNA) on March 19, 2013.

KCNA did not specify when the drill took place.

Japanese Chief Cabinet Secretary Yoshihide Suga said Tuesday that Japan and the United States will impose tougher financial sanctions against the Democratic People's Republic of Korea (DPRK), which said it will launch preemptive nuclear attack against the United States and Japan.