PARIS (AP) _ The eldest son of late French President Francois Mitterrand agreed to pay a hefty bail after spending three weeks in a Paris prison for his alleged role in an arms trafficking scheme, his lawyer said Tuesday.

Jean-Christophe Mitterrand, under investigation for complicity in weapons trafficking and misuse of political power, will pay $725,000 in bail, attorney Jean-Pierre Versini-Campinchi said.

``His family must raise the money and pay the bail,'' Versini-Campinchi told The Associated Press.

Mitterrand, 54, has been in La Sante prison since Dec. 21. He had initially said he was unable to come up with the money and would stay behind bars despite a court ruling for his release on Jan. 2.

Versini-Campinchi said in a statement that Mitterrand would not be released before Thursday.

Mitterrand is under investigation for his alleged role in a money-laundering scheme around the illicit sale of weapons from the former Soviet Union to Angola in the 1990s.

Mitterrand has denied any illegal role in the scandal, which centers on the activities of the French company Brenco International.

Mitterrand allegedly received $1.8 million via Brenco's president, Pierre Falcone, between 1993 and 1998. Falcone and several others also are also being investigated.