Norwegian police said on Sunday that an explosion occurred near the US embassy in the capital, Oslo, but no casualties were reported.
The explosion occurred around 1am local time (0000 GMT), the Oslo police department said in a statement, adding they had no information about the blast’s cause or who was behind it.
The police said it was in contact with the embassy about the incident and that a large number of resources were on site.
US embassies have been placed on high alert in the Middle East over American military operations in Iran and several have faced attacks as Tehran hits back at industrial and diplomatic targets.
But police gave no indication the incident near the embassy in Oslo was connected to the conflict.
