The government plans to formulate an extra budget this month that will possibly exceed ¥4 trillion to finance reconstruction work in the quake- and tsunami-hit Tohoku region, a senior lawmaker of the ruling Democratic Party of Japan said Thursday.

The policy was agreed on during a meeting of the government and senior DPJ lawmakers, Azuma Koshiishi, who heads the DPJ's Upper House caucus, told reporters.

Koshiishi said "at least ¥4 trillion" will be required for emergency steps incorporated in the first extra budget for fiscal 2011. After working closely with opposition parties, the government will try to submit the extra budget to the Diet before the Golden Week holidays begin April 29.