The four stowaways that terrorized a Grimaldi con-ro in December 2018 will each spend at least a year behind bars.

According to the UK's Express & Star, the 21-year-old alleged ringleader Joberto McGee was sentenced to 32 months and Toheeb Popoola, 27, to 31. Samuel Jolumi, 27, and Ishola Sunday, 28, will each serve a 16-month sentence.

The west African quartet were accused attacking the crew of the 78,000-gt Grande Tema (built 2014) as it transited the Thames Estuary en route to Tilbury, waving metal pipes and throwing human waste at crew members.