A year after his daughters Amina and Zainab were kidnapped by Boko Haram militants with more than 200 other girls from their school dormitories in the Nigerian town of Chibok, Yakubu Maina fears he may never see them again.
"Sometimes I cannot but think my daughters have been killed," Maina, a 50-year-old farmer, said by phone from Chibok. "Who knows if the girls are even still alive?"
The Empire State Building in New York City will be illuminated in red and purple on Tuesday to mark the one-year anniversary of the abduction. It's part of a bid to boost the #BringBackOurGirls social media campaign championed last year by Michelle Obama and Malala Yousafzai, the Pakistani schoolgirl who survived a Taliban gun attack to become a global advocate for girls' education.