Police investigators plan to arrest former architect Hidetsugu Aneha by the end of this month on suspicion of fabricating quake-resistance data for condominiums and budget hotels, sources said Friday.

The arrest will come five months after revelations of the scandal surfaced in November sent shock waves to condo buyers in earthquake-prone Japan. The buildings involved were found to be vulnerable to strong earthquakes and some of them have been demolished.

The police also plan to question Susumu Ojima, 52, president of Huser Ltd., the developer of many quake-vulnerable condos, possibly next week, on a voluntary basis, the sources said. Huser has been undergoing court-led liquidation.