The pair were in their police car when the explosion went off in Spaarndam, northeast of Amsterdam, in the Netherlands, at about 6.30pm. Both were badly injured, with one in a serious condition in hospital, local media said.

IG The explosion injured two police officers

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Apparently there was an error Spaarndam Police spokesman

A police spokesman said both officers were taken to hospital. He added the explosion may have taken place after the SWAT team's own device went off. The spokesman, said: "Apparently there was an error." He said squads are usually armed with explosives.

Michael Bergen The two SWAT officers were taken to hospital in a bad condition

Sam Guichelaar, who was sat in his living room at the time of the explosion, claimed one of the victims in the blast had bone sticking out of his leg when he looked outside. The eyewitness said that two officers were both strewn on the ground, but that that the officer on his left was in a worse condition than his colleague. Mr Guichelaar told local media: "He had severe damage to his leg. The bone sticking out. The other one looked better on the eye, but they said there were splinters in his back and leg."

It is not yet clear why the SWAT team had been deployed to the area. The scene has been sectioned for forensic examination.

TWITTER Emergency services arrived at the scene shortly after the explosion

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