Chad's police spokesman says police have arrested 62 women for wearing full veils in public as the country steps up security against extremism following a multiple suicide bombing attack.

Paul Manka said Thursday the first major arrests of women were carried out in the capital, N'djamena, since Wednesday in line with anti-terrorism measures. Chadian authorities banned wearing full veils or burkas in public places in June to prevent jihadi attacks, especially by Nigerian Islamic extremists Boko Haram.

The extremist group used women and children to carry out five suicide bombings in a village near Lake Chad Saturday, killing at least 36.

Manka said the women would be released after paying a 100,000 CFA ($170) fine. He said if they are repeatedly arrested they will be charged with complicity with jihadis.