"As a result of this act of violence, MSF has been forced to suspend activities in the area until such time as it receives adequate guarantees for the safety for its staff and the acceptance of its medical and humanitarian activities," the organization said in a statement Thursday.
Michelle Chouinard, MSF’s head of mission in CAR, condemned the attacks.
"It is absolutely unacceptable that a team of medical workers and their patients were attacked while returning from providing lifesaving medical care," Chouinard said, as quoted by MSF.
The Central African Republic has been suffering from sectarian clashes between Muslims and Christians since the 2013 coup, when Muslim Seleka rebels seized control in the majority-Christian nation, overthrowing president Francois Bozize, who had ruled the country since 2003.
Thousands were killed in the ensuing violence and about 20 percent of the population fled their homes. Two successive interim governments, as well as thousands of UN and French peacekeepers, have struggled to stop the fighting and disarm militias since the conflict escalated.