Police in Sudan arrested the world's most wanted people smuggler, Mered Medhanie, 35, from Eritrea. His nickname is 'The General' because of the way he plans smuggling. His actions caused hundreds of migrant deaths. Migrants are people trying to go to Europe for a better life. Police found Mered in a secret hideout in Sudan's capital city Khartoum. They worked with Britain's National Crime Agency (NCA) and intelligence services.