A woman who purchased 41 properties in Beijing with multiple forged identities has been detained, authorities in northwest China's Shaanxi Province said Tuesday.

Gong Ai’ai, former deputy head of the Shenmu County Rural Commercial Bank, in Yulin City, was detained on Monday for forging official documents and government stamps, Xinhua News Agency reported.

Gong, 49, was found to own 41 houses as well as office and commercial properties in Beijing, worth an estimated 1 billion yuan ($161 million). The properties have a total floor area of 9,666.6 square meters, according to the city's public security bureau.

City police have seized 10 of 41 properties with a total area of 1,945 square meters along with an Audi car, which was bought with an illegally-registered "hukou" in Beijing.

In China, an individual has one legitimate, official identity and hukou record.

The scandal raised public anger, with people questioning regulatory loopholes in property ownership and expressing frustration with the country’s household registration, or hukou, system.

China's property market controls restrict individuals from buying multiple homes, but fake identities can help the holders evade restrictions. With multiple identities there is also the potential for a person to acquire multiple foreign passports that can be used to claim foreign residency, which would then make future prosecution by Chinese authorities much more difficult.

Seven people, including four police officers, have been detained for allegedly helping Gong obtain fake household registration records, according to the Ministry of Public Security.

Chinese Internet users nicknamed Gong “house sister” after the scam was uncovered earlier this month.

Gong first registered as a resident in the town of Shenmu in Shaanxi, later registered three identities in two counties in neighboring Shanxi Province and Beijing between 2004 and 2008, an investigation uncovered, according to the police.