From the U.S. State Department:

The Department of State warns U.S. citizens of the risks of traveling to the Central African Republic (CAR), and recommends against all but essential travel outside the capital, Bangui. Travelers in the CAR should exercise extreme caution. ...

Armed militia groups, bandits, and poachers present real dangers, and the Central African government is unable to guarantee the safety of visitors in most parts of the country. There have been repeated attacks on Central African and expatriate travelers in the countryside. Attacks in past months have occurred as close as 70 kilometers from Bangui. Poachers and armed men also pose a threat to game hunters in northern and eastern CAR. The Lord’s Resistance Army (LRA) poses a similar threat to hunters in eastern CAR. ...

U.S. State Department Warning