Spain says it is trying to establish what happened to three Spanish freelance journalists reported to have gone missing around the embattled northern Syrian city of Aleppo and that it will contact the government in Damascus over the case.

Justice Minister Rafael Catala told Spain's Cadena SER radio on Wednesday that the government had no news regarding the three and could not say if authorities are treating their disappearance as a kidnapping.

A Spanish journalism association reported on Tuesday the three were missing since July 13. They had traveled to Syria to report on the country's long-running civil war.

In another interview late Tuesday, Catala said it was necessary "to find out what happened, who is holding these journalists, why, and if the possible captors are looking for a ransom."