The Liberal Democratic Party on Monday submitted no-confidence motions in the Diet against two Cabinet ministers, holding them to blame for the leak of a sensitive video of collisions involving a Chinese trawler and two Japan Coast Guard cutters in September off the Senkaku Islands.

The LDP, the main opposition force, separately submitted the motions against transport minister Sumio Mabuchi and Chief Cabinet Secretary Yoshito Sengoku to the Lower House in a bid to delay the passage of the Democratic Party of Japan-led government's supplementary budget bill.

The motion against Sengoku was voted down by the chamber controlled by the ruling bloc, and the one against Mabuchi was expected to follow later on.