A Malian security official based in the northern city of Gao said 16 were killed in the clashes last day. The official insisted on anonymity because he was not authorised to speak to the press.
Florent Geel, Africa director for the International Federation for Human Rights, also said 16 were killed but added that the organisation was waiting on details. He spoke by phone from Bamako, citing information provided by a member in Gao.