The main opposition Democratic Party of Japan hopes to settle questions surrounding an e-mail that one of its lawmakers has claimed shows a shady money transfer involving ruling Liberal Democratic Party Secretary General Tsutomu Takebe without anyone having to resign, DPJ members said Saturday.

The party is considering holding a news conference with Hisayasu Nagata, the lawmaker who first made the allegations about the e-mail at a House of Representatives panel on Feb. 16, sometime this week to explain the case in more detail, they said.

The DPJ also plans to make public its probe into the e-mail's authenticity.