TRIPOLI, Libya (AP) — Libya’s militia-controlled detention centers are holding nearly 5,000 people without access to the justice system, and some 35,000 civilians still remain forcibly displaced as a result of the country’s 2011 civil war, an international human rights group said Tuesday, at a time the western-backed government is locked in power struggle with an Islamist-leaning parliament.

In its annual report, Human Rights Watch said the interim government had faced “multiple challenges” last year, such as dealing with “myriad armed groups” who are imposing their authority in parts of the country, people detained without trials, and authorities’ inability to conduct proper investigations into a wave of assassinations and attacks that have rocked the country since the war.