PARIS (AFP) - Anti-terrorism police probing death threats received by French President Nicolas Sarkozy and several ministers have arrested a man in southern France, officials said Wednesday. Threatening letters accompanied by pistol bullets were sent this month to Sarkozy, Interior Minister Michele Alliot-Marie, Justice Minister Rachida Dati and Culture Minister Christine Albanel. Identical copies of the 20-line typed letter were sent to former prime minister Alain Juppe and several members of Sarkozy's UMP party, including local elected officials. Police on Wednesday arrested a 47-year-old man at his home in the Mediterranean city of Montpellier in connection with the letters, acting on a tip-off from a member of his family, a police official said. An official at the Paris prosecutor's office earlier told AFP that the letters were all posted from the Montpellier region. He said investigators suspected they were dealing with an "unhinged" individual, as opposed to someone with a political agenda. "It's obviously someone who is a bit unstable," Alliot-Marie told reporters after a cabinet meeting. One of the letters, seen by AFP, was riddled with spelling mistakes and contained mostly incoherent and offensive language directed at Sarkozy, his ministers and other right-wing or centrist politicians. The bullets contained in them were either .38 calibre or nine millimetre. The letters were being examined for possible DNA evidence, while police were scouring surveillance camera footage of the areas where they were posted, the judicial official said.