Four members of an extended family in Virginia and Maryland were charged Tuesday with concealing from federal tax authorities $30 million netted from “flipping” hundreds of foreclosed homes.

Husband and wife Thanh Hoang, 62, and Minh-Vu Hoang, 56, and Minh-Vu Hoang’s sister, Van Thanh Vu, 53, all of Bethesda, were arrested Tuesday after being indicted by a federal grand jury May 28 on charges of tax evasion, money laundering and concealing assets from a bankruptcy court, U.S. Attorney for the District of Maryland Rod Rosenstein said. Thanh Vu’s ex-husband, Hai Duc Ngo, 59, of Woodbridge, Va., was also charged with a related crime.