A leading political activist whose family said that he was abducted by Mali’s military authorities has been released after a month in captivity, his relatives said. Alassane Abba, one of the leaders of the former political party Codem, was dropped off along a road in Mali’s capital, Bamako, Alhousseini Jannatta Alassane, his son, told The Associated Press. “No authority has confirmed their involvement, but we believe the intelligence services were behind the kidnapping,” he said.