Handcuffs
When a suspect is extremely aggressive, leg irons may be used as well. Sometimes the chain connecting the leg irons to each other is looped around the chain of the handcuffs, resulting in the prisoner being "hog-tied" or "hog cuffed". In a few rare cases, people lying on their stomachs have died from positional asphyxia. This makes the practice very controversial, and has led to it being restricted, or even banned, in many places.