Six people have been arrested after an alleged plot to assassinate Afghan President Hamid Karzai was foiled, the interior ministry said today. "The Afghan intelligence agency has arrested a group of six people in connection with an assassination plot against the life of the president," interior ministry spokesman Siddiq Siddiqui said. The news comes following a string of assassinations of key Karzai allies. On September 20, peace envoy Burhanuddin Rabbani was killed by a turban suicide bomber at his Kabul home, throwing into turmoil Karzai's strategy for trying to talk peace to the Taliban.