Police found no suspicious objects but have requested that the schools remain alert.
Police at one of the closed schools.
The Guardia Civil carried out the arrests.
Both in Spain and in Europe, an increase in investigations into minors in the context of jihadist terrorism has been detected.
Update: Spain's police detain three in probe into murder attempt on politician, one is a British woman
Victim was shot by a gunman wearing a helmet who fled on a motor bike.
Arrests were carried out in Malaga and Granada this morning.
Palma National Police were part of the nationwide counter terrorism operation.
The Foreign Office has updated its advice for anyone travelling to Spain.
“Attacks could be indiscriminate, including in places visited by foreigners."
The move comes as Israel launched a military offensive to root out Hamas fighters in the besieged Gaza Strip.
Soldiers take part in the Milex 23 military drill in Rota, Spain, October 17, 2023. REUTERS/Juan Medina
“This is terrorism. This is evil. There is no justification or rationalization for Hamas’ actions."
“We, the family, has had no contact with my aunt since and we have a deep feeling of sadness and depression but we must maintain hope that she and all of the hostages will be returned safely."
It was the last fatal ETA terrorist attack in Spain.
Suspect had been under surveillance by security operatives.
His wife says that he will be tortured if he is returned to Algeria.
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