Ugandan President Yoweri Museveni has visited the sites of two devastating bombings in the capital, Kampala, where at least 64 people were killed while watching the World Cup final. Scores of others were wounded.
Mr. Museveni Monday called the attackers "terrorists." He said Uganda will find and arrest them, "wherever they are."
No one has claimed responsibility for the attacks late Sunday. A police official (Kale Kaihura) said he suspects the Somali Islamist militant group al-Shabab might be behind the coordinated bombings, which would make it the group's first attack outside Somalia.
Al-Shabab controls most of Somalia's capital, Mogadishu, and has banned World Cup broadcasts there.
A commander for al-Shabab (Sheik Yusuf Sheik Issa) said in Mogadishu he is happy with the attacks in Uganda, but he did not confirm or deny whether the group is responsible.
Officials say they believe the explosions were detonated by suicide bombers.
Somali militant groups have threatened to attack Kampala because Ugandan peacekeepers are part of the African Union force in Somalia to support the interim government.
Police said the first blast ripped through an Ethiopian restaurant. The second, deadlier attack struck a rugby club where viewers were watching the championship football (soccer) match on a large, outdoor screen.
U.S. President Barack Obama said he is "deeply saddened" by what he called the "deplorable and cowardly" attacks. He and Secretary of State Hillary Clinton said the U.S. is ready to provide any assistance requested by the Ugandan government.
A U.S. embassy spokeswoman in Kampala, Joan Lockard, says one American is among the dead and several others may have been wounded.
Some information for this report was provided by AP, AFP and Reuters.