Egyptian authorities have ordered the detention of Suzanne Mubarak, wife of deposed President Hosni Mubarak, the government-run MENA news service reported Friday.
The move came a day after the government said that Mubarak and his wife had been questioned. that the investigation was examining "illegal acquisition of wealth".
MENA said prosecutors ordered Suzanne Mubarak, 70, detained for 15 days pending further investigation of the allegations.
Suzanne Mubarak would be taken to a Cairo prison, security and judicial sources told Reuters.
The 82-year-old former president is in a hospital in the Sinai resort of Sharm el-Sheikh.
He has been questioned several times, but Thursday was the first time his wife faced interrogation.
MENA said Suzanne Mubarak was asked about 20 million Egyptian pounds ($3.3 million) held in her name in a bank as well as a luxurious home in Cairo.
Mubarak was deposed Feb. 11 by a popular uprising. His wife has been staying at their villa in Sharm el-Sheikh, which has an estimated value of 36 million pounds ($6 million).
A report by a financial oversight body said that Mubarak and his family had numerous bank accounts in foreign and local currencies, luxury apartments and palaces and valuable land holdings. Some estimate his fortune in the tens of billions of dollars.
Mubarak denies the allegations.
Mubarak also faces charges over deaths of protesters during the uprising.