Terrorism is being investigated in an explosion at the US embassy in Oslo early Sunday — as officials said it could have been a deliberate attack linked to the strikes in Iran.

“It’s natural to see this in the context of the current security situation and that this could be an attack deliberately targeting the US embassy,” Frode Larsen, head of the Oslo police investigation unit told reporters.

He later told public broadcaster NRK: “One of our hypotheses is that this is terrorism, but we are also exploring other options.”

The blast erupted in Oslo around 1 a.m. local time Sunday, hitting the entrance to the embassy’s consular section and causing minor damage, police incident commander Michael Delmer said. 

No suspects have been identified so far, and police have yet to publicly state what the cause of the explosion was. 

There were no deaths or injuries reported in the aftermath of the blast, with no additional explosives found near the embassy.  

Sebastian Toerstad, an 18-year-old high school student who was driving by the embassy at the time of the explosion, said the building was covered by “a very thick layer of smoke on the street.” 

“There was some damage to the entrance,” he told Reuters.

Norwegian Foreign Minister Espen Barth Eide slammed the attack on the US embassy as “an unacceptable act,” vowing that Oslo would capture the culprits. 

“The security of diplomatic missions is very important to us,” he said in a statement.

US embassies across the Middle East have been placed on high alert as tensions continue to escalate following joint American-Israeli airstrikes on Iran.

The Islamic Republic’s retaliation has included drone and missile strikes on US embassy and military bases in the region. 

With Post wires