Spain said it arrested two suspected militants in Ceuta early on Tuesday, both accused of being part of an Islamist cell planning an attack in the country, ABC News reported.
The interior ministry said the arrests were part of a wider security operation that has seen more than 20 arrests since September.
The two suspects in Ceuta, on the Moroccan coast, were arrested under the same police operation that detained four people in January on suspicion of using social media to recruit people to militant groups like Daesh, the ministry said.
A Moroccan woman who is a Spanish resident was arrested on Sunday on suspicion of attempting to join Daesh fighters in Syria.