The United States has once again urged its citizens to avoid travelling to Afghanistan, warning of serious risks to their safety and the possibility of arbitrary detention, Khaama Press reported.

In a statement issued on Tuesday, the US Department of State advised Americans to "be aware of risks and make informed decisions" before considering travel to the country.

The advisory explained that Washington uses a special "D risk indicator" in its travel alerts to highlight countries where US citizens face a high danger of wrongful or arbitrary detention. Afghanistan, the report said, tops this list due to the severity of threats on the ground.