P204 CEEFAX 204 Tue 8 May 21:14/20 In Tripoli three Libyans accused of being British-backed terrorists have been arrested and a fourth killed. The official Libyan news agency said the four were caught on Sunday trying to infiltrate Libya from the bordjt with Tunisia. The broadcast claimed the terrorist group was trained in assassination in Britain, Sudan, America and some Arab countries. News index 102/202 Newsreel 119/219