One of the most powerful figures in the French paparazzi business and a journalist from Paris Match magazine were detained on Thursday over allegations of witness tampering, sources close to the case told AFP. Mimi Marchand, who runs the BestImage agency, was taken into custody for questioning in Nanterre, west of Paris, along with journalist Francois de Labarre. Marchand, known widely as "Mimi", works closely with a host of rich and powerful...