- Has committed unprovoked violence or other dangerous criminal act.
- Objects to the deportation, in general.
- Is wanted by the police in his/her home country or in another state or is assumed to be arrested upon arrival at the destination .
- Needs guarding at intermediate or transfer station.
- Due to mental state or drug dependence ,is considered a hazard to himself/herself and/or other people.
- Is to be handed over to the arriving country’s police authorities due to a criminal act.