The Bank of Japan added ¥2.5 trillion to the financial system and China cut interest rates as Asian central banks attempted to calm markets after Lehman Brothers Holdings Inc. filed for bankruptcy.

The U.S. Federal Reserve on Monday added $70 billion in reserves to the banking system, the most since the September 2001 terrorist attacks, and may cut its benchmark lending rate. China lowered its benchmark rate for the first time in six years late Monday and may act again.

Japanese bonds jumped, sending the yield on the benchmark 10-year bond to its biggest drop in five years on concern the credit crisis will worsen.