WASHINGTON (AP) — Secretary of State John Kerry calls Saturday's assault on a shopping mall in Kenya's capital "an enormous offense against everybody's sense of right and wrong."

Kerry, who is in New York for meetings at the United Nations, describes the attackers as "ruthless and completely reckless terrorists."

He spoke Sunday with Somalia's foreign minister and U.N. ambassador. The Somalia-based, al-Qaida-linked group al-Shabab has claimed responsibility for the attack on the upscale Westgate Mall in Nairobi.

State Department spokeswoman Marie Harf says U.S. law enforcement, military and civilian personnel in Nairobi are providing advice and assistance to the Kenyan authorities.

She says five Americans were among the scores of people injured in the attack by Islamic extremists, but the U.S. has no reports of any American deaths.