French judicial authorities have opened an investigation in Carla Bruni, the wife of former president Nicolas Sarkozy, in connection with alleged election campaign funds from Libya. The singer has been placed under judicial control, French media reported on Tuesday, citing the judiciary. The investigations against the 56-year-old centre on possible witness tampering. The Libya affair centres on allegations that money for Sarkozy’s 2007 presidential election campaign came illegally from the regime of the then Libyan ruler Moamer Gaddafi. The French-Lebanese businessman Ziad Takieddine said in 2…