MADRID (AP) — Spanish and Moroccan police on Tuesday arrested four suspected members of a jihadi cell that sought to recruit fighters for the Islamic State group, including one described as a former Guantanamo detainee who once fought with militants in Afghanistan.

Three people were arrested in Spain's North African enclave city of Ceuta while a Moroccan was arrested in the Moroccan border town of Farkhana, next to Melilla, Spain's other North African enclave, statements from the two nations' interior ministries said.

One of those detained in Ceuta was the former Guantanamo detainee who was not named by Spanish authorities but described as "a leader who was trained in handling weapons, explosives and in military tactics." Another was the brother of a fighter who carried out a 2013 suicide attack against the Syrian military, the Moroccan statement said.

The suspects had set up contacts to try to acquire weapons and bomb-making materials and were aiming "to carry out terrorist acts in Spanish territory," the statement said, without specifying possible targets.

They also worked to recruit teenagers from Ceuta to join IS in Iraq and Syria, the Spanish statement said.

Spanish police arrested about 100 suspected Islamic extremists last year and more than 600 total since the 2004 train bombings in Madrid that killed 191 people and injured nearly 2,000.

Associated Press writer Samia Errazzouki in Rabat, Morocco, contributed to this report.