Story highlights
- Pirate Mohamed Abdi Hassan, known as "Afweyne," announces retirement
- Piracy began to gain international attention in 2008 as number of attacks grew
- Afweyne got notoriety as organizer of two high-profile hijackings, says Adjoa Anyimadu
- Piracy off coast of Somalia is no longer as lucrative as it once was, says Anyimadu
Adjoa Anyimadu
African piracy hub goes west 05:08
