The maximum detention period that a person can stay in a CIE is 60 days, after which he or she must be released. The maximum detention duration for an asylum seeker who has applied for asylum from the CIE is the 4-day admissibility phase. If he or she is admitted, he or she will continue their asylum claim outside detention.
Persons issued with detention orders upon arrival are detained in police stations for a maximum period of 72 hours. Where return has not been carried out within that time limit, they have been transferred to a CIE. In November 2020 the Spanish Ombudsman reported that migrants are detained for longer periods than the legal limit of 72 hours at the CATE of Barranco Seco on the Canary Islands, and that the conditions in the facility are inadequate. Hundreds of persons are sleeping in canvas camp cots, in the middle of garbage and with limited access to drinkable water.
The maximum duration of persons’ de facto detention and their obligation to remain in border facilities is 8 days. When this time limit is not respected, the applicant is usually admitted to territory, and will continue his or her asylum claim through the regular procedure.
 Article 62(2) Aliens Act.
 La Provincia, ‘El Defensor del Pueblo denuncia que los migrantes superan “con creces” el límite legal de 72 horas en Barranco Seco’, 23 January 2021’, available in Spanish at: https://bit.ly/3aw2BgH.