The Nigerian army has freed at least 160 girls and women from the hands of Boko Haram, as it continued its advance on the Sambisa natural reserve, the last major stronghold of the terrorist group, an official said on Thursday.

At least 19 people were killed and another 22 were wounded in clashes between the army and Tuareg separatists, who since Wednesday have been trying to gain control of the city of Lere in the northwest of the country, a defence ministry statement said on Thursday.

At least 27 militants and five security personnel were killed on Thursday during a military operation in Khyber Agency, a tribal area in the Federally Administered Tribal Areas region of Pakistan, media reported.