BEIJING, March 24 (Xinhua) -- China is profoundly shocked that a man claiming to be an active-duty officer of the Japan Self-Defense Forces forcibly broke into the Chinese embassy in Japan by climbing over a wall in the morning, Chinese foreign ministry spokesperson Lin Jian said at a regular press briefing on Tuesday.

According to Lin, the man admitted that his act was illegal and he also threatened to kill Chinese diplomatic personnel in the so-called "name of god."

Lin said that China has lodged solemn representations and a strong protest with the Japanese side.

The Chinese side urges the Japanese side to immediately conduct a thorough investigation into the incident, severely punish those involved, and provide a responsible explanation to China, he added.