ACC Deputy Director (Public Relations) Pranab Kumar Bhattacharya told UNB that the commission approved the filing of the cases at a regular meeting on December 23.
ACC Deputy Director Md Ali Akbar filed the cases.
According to the statement of a case, former ruling party MP took out a lease on government land by providing false information and built a three-storey building there in his wife's name.
Later, the building was rented to Pirojpur Palli Bidyut Samity.
The ACC also mentioned in another case statement that the couple grabbed another piece of government land in Swarupkat upazila of the district and built a mansion there.
They were also accused of grabbing a half-acre plot of government land and building an illegal wall around it in Pirojpur district.
Meanwhile, the national anti-graft body imposed a travel ban on the Awami League leader and his wife on December 24.
The commission will soon send a notice to the couple asking for separate wealth statements, the ACC official said.