Boko Haram fighters crossed the border into Cameroon and attacked a village . The attack killed at least 20 people in Cameroon's Borno state, according to local officials. It is one of several attacks against Cameroon this year .
Boko Haram fighters crossed the border into Cameroon and attacked a village . Local official cited death toll of 23 , but had no other details . It is one of several attacks against Cameroon this year .