BEIJING – China has expressed grave concern over recurring malicious incidents that threaten the security of Chinese embassy and consulates in Japan, the Chinese Foreign Ministry said on Wednesday.

Ministry spokesperson Lin Jian pointed out at a regular press briefing that Kodai Murata, a second lieutenant of Japan's Ground Self-Defense Force, illegally broke into the Chinese Embassy in Japan armed with a knife. Nearly three months have passed, yet Japan's investigation and handling of the case are still proceeding slowly, he added.

"The incident once again exposes deep-seated issues in Japan," Lin said, urging the Japanese side to reflect on and correct its policies and conduct, carry out a thorough probe and provide a responsible explanation to China.