The father of a Nigerian schoolgirl kidnapped by Boko Haram called on Tuesday for the government to do more to secure her freedom after audio of her begging for help was released.
Leah Sharibu, 15, was taken hostage with more than 100 girls in the town of Dapchi in February, in the largest mass abduction since Boko Haram took 220 girls from the town of Chibok in 2014.
She was the only one not released when the others were freed a month later — apparently because she refused to convert from Christianity to Islam — the freed girls said in March.