Five Sapporo condominium complexes have been confirmed to have been built with faked earthquake-resistance data, the land ministry said Tuesday, and the city is investigating 28 more buildings the architect who compiled the data has said are not sufficiently quake-proof.

The Sapporo Municipal Government will not disclose the names and locations of the five complexes because it has determined there is no immediate threat to the residents and it is still investigating, according to the Ministry of Land, Infrastructure and Transport.

Ryoichi Asanuma, certified architect second-class, compiled the faked quake data for the five complexes.