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Police: 4 missing, 4 injured in firework factory blast in northeastern Spain

  • Police officers and firefighters stand by the destroyed fireworks factory Pirotecnia Zaragozana's building after a huge explosion  in Pinseque, Spain, Monday, Aug. 31, 2015. The blast at a fireworks factory in northeastern Spain killed a number of people and seriously injured tothers, police and firefighters didn't know the cause of the blast.  (AP Photo/Aranzazu Navarro)

    Police officers and firefighters stand by the destroyed fireworks factory Pirotecnia Zaragozana's building after a huge explosion in Pinseque, Spain, Monday, Aug. 31, 2015. The blast at a fireworks factory in northeastern Spain killed a number of people and seriously injured tothers, police and firefighters didn't know the cause of the blast. (AP Photo/Aranzazu Navarro)  (The Associated Press)

  • Police officers and firefighters stand by the destroyed fireworks factory Pirotecnia Zaragozana's building after a huge explosion  in Pinseque, Spain, Monday, Aug. 31, 2015. The blast at a fireworks factory in northeastern Spain killed a number of people and seriously injured tothers, police and firefighters didn't know the cause of the blast.  (AP Photo/Aranzazu Navarro)

    Police officers and firefighters stand by the destroyed fireworks factory Pirotecnia Zaragozana's building after a huge explosion in Pinseque, Spain, Monday, Aug. 31, 2015. The blast at a fireworks factory in northeastern Spain killed a number of people and seriously injured tothers, police and firefighters didn't know the cause of the blast. (AP Photo/Aranzazu Navarro)  (The Associated Press)

  • The destroyed fireworks factory Pirotecnia Zaragozana's building is seen behind firefighters trucks after a huge explosion occurred   in Pinseque, Spain, Monday, Aug. 31, 2015. The blast at a fireworks factory in northeastern Spain killed a number of people and seriously injured tothers, police and firefighters didn't know the cause of the blast. (AP Photo/Aranzazu Navarro)

    The destroyed fireworks factory Pirotecnia Zaragozana's building is seen behind firefighters trucks after a huge explosion occurred in Pinseque, Spain, Monday, Aug. 31, 2015. The blast at a fireworks factory in northeastern Spain killed a number of people and seriously injured tothers, police and firefighters didn't know the cause of the blast. (AP Photo/Aranzazu Navarro)  (The Associated Press)

Spanish police say four people are missing and four others have been injured in an explosion at a fireworks factory in northeastern Spain.

A police spokeswoman said the blast occurred around 2 p.m. (1200 GMT) Monday at the Pirotecnia Zaragozana factory in the small town of Pinseque.

The officer said police were searching the blast area for the four missing while the four injured had been taken to a hospital in the nearby regional capital of Zaragoza. The officer spoke on condition of anonymity in keeping with police regulations.