The State Department says it is trying to determine if any U.S. citizens were killed or injured in the Oslo bombings and has no confirmed reports of American casualties.
Spokeswoman Heide Bronke Fulton said in a statement Friday that the United States has expressed its sympathy to the Norwegian government and offered aid, but so far Norway hasn't requested help.
She said the U.S. condemns the "despicable acts of violence" in Oslo.
Bronke Fulton said the department was advising American travellers to avoid downtown Oslo and follow local media reports. She said all U.S. Embassy personnel have been accounted for.