Police on Tuesday questioned Susumu Ojima, president of failed condominium developer Huser Ltd., on a voluntary basis about suspicions the firm sold units in a condominium building in Kanagawa Prefecture despite being aware it was built using fabricated quake-resistance data, investigative sources said.

It is the first time the police have interviewed Ojima, 52, since the data fabrication scandal surrounding disgraced architect Hidetsugu Aneha made headlines in November. Aneha has since been stripped of his license.

The police aim to establish a criminal case against Ojima as early as May on a charge of fraud and violating the Building Lots and Building Transaction Business Act, the sources said.