article_snippet.sent: Although no one has claimed responsibility for the attack, Boko Haram Islamists have repeatedly carried out suicide and bombing attacks on bus stations and markets in Gombe and other northern cities, making the group the main suspect.
article_snippet.sent: Boko Haram Islamists has in recent months been under sustained pressure from sweeping offensives from a four-nation regional alliance of Nigeria, Chad, Niger and Cameroon.
article_snippet.sent: sweeping offensives have considerably weakened Boko Haram Islamists capabilities, which has prompted Boko Haram Islamists to resort to attacks on soft targets such as bus stations, markets and schools.
highlights_snippet.sent: No group has claimed responsibility, but Boko Haram is suspected .