David Simpson, a pilot from North Yorkshire, discovered a massacre of villagers while working in Africa. After reporting it to the authorities, he has been held in jail for more than a month with investigators claiming he could be responsible for the slaughter.
Eighteen people were tortured and hacked to death in the Central African Republic last month.
David Simpson, who's been working there for two years, says it bears all the hallmarks of an attack by local rebels.
More top news
Lance Corporal Norman Jackson VC has been given his rightful place on the Great Central Railway War Memorial.
A mentoring scheme to help hundreds of women into leadership roles has been launched by the Labour Party in memory of Jo Cox.
The annual service remembers the 250 airmen who lost their lives in the 1944 Warsaw Uprising