11.11.2015 by BBC Africa
The US government is offering $27m (£18m) in rewards for information on the whereabouts of six leaders of the Somalia-based al-Shabab group.
The highest reward is $6m for the group's leader Abu Ubaidah. He replaced Ahmed Abdi Godane, who was killed in a US drone strike last year. Among those being hunted is Mahad Karate, also known as Abdirahman Mohamed Warsame, believed to be a key player in the attack on a Kenyan university which killed 148 people.