The explosions took place in Malmö and Lund.
Two explosions occurred in southern Sweden at night, which are suspected to be caused by bombs.
A possibly hand grenade exploded on Malmö’s Amiralsgatan around midnight. The police arrested a young man as a suspect in the case, but he was soon released, he says Swedish public radio SVT.
In the morning, an explosive was thrown into the apartment building. The police think that it was a homemade bomb, made in a thermos, says Aftonbladet newspaper.
The police do not know if the cases are related, but the connection is being investigated.