article_snippet.sent: In early April, Al-Shabaab brutally massacred 147 people at Garissa University in northern Kenya.
article_snippet.sent: It was the group's deadliest attack to date.
article_snippet.sent: The gunmen would have driven down the road past the Ibnu-Siina school -- and the Ibnu-Siina single unarmed guard -- to get to Garissa University in northern Kenya, only a few hundred meters away.
article_snippet.sent: In northeast Nigeria, Boko Haram's has been waging war against the government -- and the civilian population -- for several years.
article_snippet.sent: Most notoriously, perhaps, was Boko Haram's kidnapping of around 270 girls from a boarding school in Chibok, Borno state, last April.
article_snippet.sent: But Boko Haram's has also carried out numerous other attacks on schools, slaughtering young boys and girls as young boys and girls sleep in young boys and girls dormitories.
article_snippet.sent: Tracking the killer behind Garissa massacre .
highlights_snippet.sent: Terror group massacred 147 at Kenyan university last week .