TOKYO (AFP) - Tokyo stocks jumped more than 3 per cent in early trade on Monday, with investors encouraged by sharp gains on Wall Street last week and the US dollar's rise against the yen.

Investors appeared unfazed by reports industry minister Yuko Obuchi had resigned over a funds scandal, dealing a blow to Prime Minister Shinzo Abe.

The Nikkei 225 index at the Tokyo Stock Exchange gained 460.09 points or 3.17 per cent to 14,993.40 in the first few minutes of trade.