Three major opposition parties told the Diet on Friday they are determined to block any government move to inject public funds into the ailing Long-Term Credit Bank of Japan.

Legislators from the three -- the Democratic Party of Japan, the Liberal Party and Shinto Heiwa (New Peace Party) -- issued the pledge during a House of Representatives plenary session being held to discuss the three parties' joint bills for reconstructing the financial system.

Opposition leader Naoto Kan urged the ruling Liberal Democratic Party to make a substantial compromise on bills it and the government submitted last month. There are major differences between the LDP package and that of the opposition.