A police officer has died and another has been injured after a backpack explosion in the northern Spanish city of Oviedo.

The explosion occurred when officers from Spain's Special Canine Unit arrived to examine a suspicious backpack on Tuesday morning, police said.

Spanish police paid tribute to the officer, who has been named as Juan José, in a statement on X and said: "Our hearts are with his family, friends, colleagues and loved ones."

Officers found the backpack after they attended the scene for a separate incident, according to local media.

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