Dresden (dpa/sn) - At least 15 election posters were damaged in one night in Dresden last weekend. According to the police on Monday, unknown persons tore 14 posters from light poles in the north-eastern district of Bühlau between Saturday and Sunday evening. In the prefab district of Prohlis in the south-east of the state capital, a poster for the mayoral election on June 12 was set on fire and completely destroyed. State security is investigating.