President Obama on Wednesday condemned the "horrific" bombings of crowds watching the World Cup finals in Uganda.

The president condemned the attacks, for which the terrorist group al Shabaab has claimed responsibility, and said the U.S. would support an investigation into the incident.

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"I expressed, obviously most immediately, the condolences of the American people for this horrific crime that had been committed," Obama said of his conversation with the Ugandan president Yoweri Museveni following the attack. "And I told [Museveni] that the United States was going to be fully supportive of a thorough investigation of what had happened."

Senior administration officials said they believed that al Shabaab, a group whose members have a number of ties to al Qaeda, was responsible for a bombing that claimed the lives of 74 people watching the World Cup final, including one American citizen.

The U.S. government has dispatched the FBI and other federal resources to support the investigation.

"On the one hand, you have a vision of an Africa on the move, an Africa that is unified, an Africa that is modernizing and creating opportunities; and on the other hand, you’ve got a vision of al Qaeda and al Shabaab that is about destruction and death," Obama said in an interview with the South African Broadcasting Corp. "And I think it presents a pretty clear contrast in terms of the future that most Africans want for themselves and their children."