The Foreign Minister of Japan, Taro Aso, has reached agreement with Bangladesh to create a new framework for Tokyo's investment in the country.
Mr Aso is the first foreign minister to visit Bangladesh since 1987
The agreement was made in talks between Mr Aso and his Bangladeshi counterpart, Morshed Khan, in Dhaka.
Mr Aso is on a two-day visit to Bangladesh focusing on trade, investment and the infrastructure.
Correspondents say Japan is one of the biggest donors to Bangladesh, but private investment remains low.
Mr Aso told journalists after the talks that Bangladesh needs to ensure political stability and good governance to win more Japanese investment.
Bangladeshi officials said they are seeking Japanese financial assistance for construction of a deep sea port and a major river bridge.
Mr Aso said the Japanese government would consider funding the projects after a feasibility study.
This is the first visit by a Japanese foreign minister to Bangladesh since 1987.