Burundi crisis: US state department issues travel warning

The US state department is warning Americans not to travel to Burundi as political violence there increases.
A travel warning issued on Sunday urges US citizens in the central African country to leave "as soon as it is feasible to do so".
On Friday, 87 people were killed after three military sites were attacked, Burundi's army said.
US rights group Human Rights Watch (HRW) on Sunday called for an investigation into the killings.
Protests in Burundi began in April when President Pierre Nkurunziza announced he would seek a third term in office.