Three brothers have been arrested in connection with an explosion outside the US embassy in Oslo, Norway, which caused minor damage but no injuries.

Context

The explosion occurred at the embassy's entrance and is believed to have been caused by an improvised device. Authorities are treating the incident as a potential terrorist act.S1S2

Key points

• The explosion occurred outside the US embassy in Oslo.S1

• Three brothers have been arrested in connection with the incident.S1S2

• The brothers are Norwegian citizens of Iraqi origin.S2

• Authorities believe the blast was caused by an improvised device.S1

• The explosion caused minor damage to the embassy.S1S2

• No injuries were reported as a result of the explosion.S1S2

• Police are investigating the motive behind the bombing.S2

• The incident is being treated as a potential terrorist act.S2

Why it matters

• The incident raises concerns about security at diplomatic missions.S1

• It highlights ongoing issues related to terrorism and public safety in urban areas.S2

What to watch

• Monitor updates on the investigation and any potential charges against the suspects.S2

• Watch for statements from US and Norwegian officials regarding embassy security.S1