Extract the answer to the question from the following context.
Question: Who was abusing the inmates?
Context: The 2009 Human Rights Report by the United States Department of State noted that human rights in CAR were poor and expressed concerns over numerous government abuses. The U.S. State Department alleged that major human rights abuses such as extrajudicial executions by security forces, torture, beatings and rape of suspects and prisoners occurred with impunity. It also alleged harsh and life-threatening conditions in prisons and detention centers, arbitrary arrest, prolonged pretrial detention and denial of a fair trial, restrictions on freedom of movement, official corruption, and restrictions on workers' rights.
security forces
The context of the situation is that the U.S. State Department was concerned about human rights abuses in CAR, and reported on these issues to a major international organization (the United Nations).
Based upon this information, it can be inferred that security forces were abusing inmates because they have power over them with impunity by law enforcement officers..