According to the newspaper, it is magnet fishermen who have picked up the object and then called the police.
The National Bomb Protection has been called to the scene.
According to NT, the blockades stretch from Generalsgatan down towards Saltängsbron as well as Fleminggatan towards Drottninggatan. The traffic in central Norrköping is affected and residents in the area are said to be locked out outside the blockades.
