SUSPECTED Unita rebels killed at least 30 people travelling aboard two trucks on the road between Saurimo and Lwena in eastern Angola, radio reports indicated on Monday. Police in Luanda confirmed the ambush and stated that some of the members were among the casualties, but could give no details of the attack. Highway attacks generally blamed on Unita, and sometimes on renegade elements of the security forces, have been a marked feature of the country’s conflict, partly in an apparent bid by the rebels to isolate their mineral-rich territories as well as southern regions.