First Look UNICEF: Boko Haram's use of child suicide bombers is already four times more than 2016 total

The frequency of suicide bomb attacks in northeastern Nigeria has increased in the past few weeks, killing at least 170 people since June 1, according to a Reuters tally.

Jossy Ola/AP

Boko Haram militants in northeast Nigeria have sent out four times as many child suicide bombers this year as they used in all of 2016, the United Nations Children's Fund said on Tuesday.