Oslo police and the National Criminal Investigation Service are investigating a deliberate incendiary blast at the US Embassy as a potential terrorist act.Justice Minister Astri Aas-Hansen confirmed that no injuries occurred during the Sunday explosion that damaged the consular section entrance.The Norwegian Police Security Service increased personnel but kept the national threat level at three despite tensions involving Iran and the USA.Foreign Minister
Espen Barth Eide and the
US State Department commented on the situation as heavily armed officers secured the area with drones.