Truong Thi Tuyet Nga (R) at the Mrs Vietnam Global 2012 contest held in the US
The Ministry of Public Security police Saturday arrested a businesswoman and former beauty queen on charges of swindling.
Officers from the Supreme Procuracy and the ministry's Social Order Criminal Investigation Department searched the home and office of Truong Thi Tuyet Nga, 52, the same day Tuoi Tre Newspaper reported without providing any further details.
Nga won the "Successful Lady" title at the 2009 Mrs Vietnam pageant and was 1st runner-up at last year's Mrs Vietnam Global 2012, and is the director of the Ho Chi Minh City-based Vu Anh Hospital.
She is the daughter of Truong Van Dang, former deputy high commander of the 7th Military Zone.
It is thought to be related to a long-running dispute with an associate called Duong My Linh.
Last October Nga filed a lawsuit against Linh for successfully seeking a court ban on her from going abroad. The suit, filed after the ban was lifted, was for a reparation of VND30 billion (US$1.43 million).
In 2007 the two women had signed a contract to invest on Nga's three-hectare plot of land in Binh Khanh Ward in HCMC's District 2, according to Cong An Nhan Dan (People's Police) newspaper.
In January 2008 they signed one more agreement and Linh paid Nga US$1.5 million in return for which she could bring a third party to invest in a project on the land.
Linh introduced an investor from Israel, but he later pulled out without investing, and Linh failed to find a third party as contracted.
Linh claimed Nga swindled her.
Following Linh's plea the court banned Nga from leaving the country but revoked it 20 days later with an apology, admitting it had made a mistake.
In her latest suit against Linh Nga has claimed that because of the ban she missed out on a contract with a foreign party valued at billions of dong and was also unable to take her father to Singapore for treatment.
On Saturday online newspaper VnExpress quoted Nguyen Thi Thu Ha, a Vu Anh Hospital official, as saying Nga's arrest was for "complaints related to property trading."