Tokyo, Japan (CNN) -- A leaked video is circulating in cyberspace, showing a boat collision that sparked a recent diplomatic battle between China and Japan. The YouTube video shows the same collision that Japanese lawmakers watched on video last week, said legislator Hiroshi Kawauchi, of the ruling Democratic Party of Japan. The Japanese Coast Guard shot the video, which is authentic and not doctored, said Kawauchi, who is a member of the House of Representatives in the Diet, Japan's legislature. "The fact that the video was leaked is a big mistake for the government," he added. "It is totally different from presenting it to the public in an official manner, and it leads the people's further erosion of faith in Japan's government."
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The YouTube video is authentic and not doctored, a Japanese legislator says
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He calls the leak "a big mistake for the government"
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China has made an "official inquiry" with the Japanese prime minister's office
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Kan's office is investigating the leaking of the video
Japan initially accused the captain of obstructing @placeholder public officers while they performed duties.