December 23, 18.54, Explosion, Södertälje

Police are on the scene. A windowpane has been shattered in connection with the explosion, there are no reports of injured persons at this time. 

Update at 20.00
A large number of police resources, including the police helicopter, national bomb squad and police dogs, are at the crime scene to determine what exploded and search for the perpetrator or perpetrators. 

Several people have been checked but no one has been arrested yet.