Officials from the National Council for Social Security Fund signed a deal with related departments of Nanjing to inject 3 billion yuan ($456 billion) into Nanjing's low-income housing construction as trust loans, China Business News reported Monday.

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The Nanjing deal is the first time that the Social Security Fund has invested in the low-income housing project in the form of trust loans, said Wang Zhongmin, deputy director-general of the council.

Wang said the council has started research in several places in order to expand investment in low-income housing projects, the report said.