A Chinese national has been detained for throwing bricks at the Japanese embassy in Beijing.

Embassy officials say the incident occurred on August 24, the day Tokyo Electric Power Company began releasing treated and diluted water from the Fukushima Daiichi nuclear plant into the ocean.

The officials said the suspect was captured by police at the scene, and that there was no damage to the embassy's facilities and no staff were injured.

Since the discharge began, stones and eggs have been hurled at Japanese schools in Qingdao, Shandong Province and in Suzhou, Jiangsu Province. Officials at the Japanese embassy and consulates-general in China said they have received many harassing phone calls.
Japanese embassy officials have taken steps to prepare for unexpected incidents, including boosting security presence at the embassy.

Chinese Foreign Ministry spokesperson Wang Wenbin told reporters on Monday that his country "protects and ensures the safety and lawful rights and interests of foreign nationals in China in accordance with laws." He reiterated that Beijing strongly urges Japan to "stop dumping nuclear-contaminated water into the sea."
Beijing has responded by ordering a suspension to all imports of Japanese sea food.

The Fukushima Daiichi plant suffered a triple nuclear meltdown in the 2011 earthquake and tsunami.
Water used to cool molten fuel mixes with rain and groundwater. The accumulated water is treated to remove most radioactive substances, but still contains tritium. TEPCO dilutes the treated water to reduce tritium levels to about one-seventh of the World Health Organization's guidance level for drinking water quality before releasing it into the sea.

The International Atomic Energy Agency says the operation is consistent with international safety standards.

Tokyo has called on Beijing to take steps to de-escalate the situation. Japanese Prime Minister Kishida Fumio said the discharge of the treated water is well understood by Western countries and island nations in the Pacific, which have judged that Japan is dealing with the matter with science-based and transparent manner. Japanese officials will convey such international opinions to their Chinese counterparts.