The suspect was part of the so-called Islamic State in the Iraqi-Syrian conflict zone.
Europol supported an operation of the Spanish National Police (Policía Nacional) leading to the arrest of a member of the so-called Islamic State. The suspect had recently returned from the conflict zone on the border of Iraq and Syria. Two other individuals associated with the suspect were also arrested during the operation in Barcelona.
On 24 December law enforcement officers detected a potentially dangerous individual that had recently arrived in Spain. The investigation determined that this individual was hiding out in a run-down property in Barcelona. Officers later discovered that the suspect was not living there alone. The fact that the suspect was so determined to cover their tracks and the risk of their location meant officers were swift to act and arrest the individuals.