Japan's Coast Guard confirmed that an Internet video showing a collision between its vessels and a Chinese fishing boat was authentic, and said it was considering criminal charges as part of its investigation into how the footage was leaked. The video, which appeared on YouTube on Friday, shows footage taken September 7 of the collision near a group of disputed islands claimed by both Japan and China in the East China Sea.

The run-in sparked a high-level political rift between the two countries, and the release of the video has raised concerns of rekindled tensions during this week's Asia-Pacific Economic Cooperation meetings which culminate in a leaders summit next Saturday and Sunday in Yokohama, just south of Tokyo.