Foreign investors sold Japanese bonds heavily in the week through April 25 on inflationary worries due to rising oil prices and caution ahead of the policy decision by the Bank of Japan. Foreigners ditched a net 786.9 billion yen ($5.01 billion)worth of Japanese long-term bonds, a significant rise from 294.7 billion yen in net sales the prior week. They also shed short-term bonds of a net 1.12 trillion yen, data from Japan's Ministry of Finance showed on Friday. The BOJ on Tuesday kept interest rates steady but three of the nine-member board proposed a hike, signaling policymakers' concerns over inflationary pressures from a rise in oil prices.