Ugandan authorities discovered an unexploded suicide vest and apprehended six individuals suspected of planning the bombings that killed 76 soccer fans. The attacks, claimed by Somali al Shabaab Islamists linked to al Qaeda, targeted a restaurant and a rugby club in Uganda's capital during the World Cup final. The group's claim of responsibility was deemed authentic by a senior U.S. official, marking the first time al Shabaab had carried out an attack outside of Somalia. President Barack Obama described the timing of the explosions, which coincided with the World Cup in South Africa, as "tragic and ironic." Obama spoke about two contrasting visions for Africa - one of progress and unity, and the other of destruction and death by groups like al Qaeda and Al Shabaab. The U.S. government has been working with Uganda and other countries in the region to prevent future attacks and share intelligence. Despite a tip-off received by Ugandan intelligence officials, Washington claims to have had no advance warning of the recent attack. The Uganda source reported that an informant from the Kisenyi suburb of Kampala informed intelligence officials on June 17 about a planned attack by Somalis during the World Cup. The official stated that over 20 individuals, including Somalis and Ugandans, were involved in the planning of the attacks. Six individuals have been arrested so far in connection with the plot. Al Shabaab has threatened further attacks unless Uganda and Burundi remove their peacekeepers from the African Union peacekeeping force in Somalia, where the militants are engaged in combat with the government and control significant portions of the country. The police found a suicide vest on Monday at a third location, which was designed to be planted rather than worn. A man named Yonis, who is an assistant to al Shabaab spokesman Sheikh Ali Mohamud Rage, told Reuters that those who carried out the attack were blessed with rage and were expected to have a long life, indicating that there was no suicide bombing involved. In addition to banning alcohol, al Shabaab has also prohibited watching soccer matches in areas under its control. Coordinated attacks are a common tactic of al Qaeda and groups associated with Osama bin Laden's militant network. For al Shabaab, this would mark their first attempt at extending their influence beyond their borders. U.S. Homeland Security Secretary Janet Napolitano expressed concern about the group's efforts to expand their reach internationally during an African summit. She emphasized the importance of being proactive in preventing terrorist attacks, especially those connected to al Shabaab, which has ties to al Qaeda in East Africa and the Arabian Peninsula. The official mentioned that the attack in Kampala was consistent with threats to expand their targets, but did not directly address whether the group posed a specific threat to the United States. President Obama stated in an interview that terrorist organizations do not value African life and use the continent as a battleground for their ideological wars, disregarding the consequences for innocent lives. The African Union confirmed that Uganda would still host a summit of African leaders despite the attack, and the regional bloc IGAD vowed to continue supporting the government in Somalia. Executive secretary Mahboud Maalim announced plans to increase peacekeepers in Somalia to over 8,000 by the second week of August. Last week, members of IGAD including Kenya, Uganda, Sudan, Ethiopia, Somalia, and Djibouti expressed their desire for 20,000 troops from the AU and United Nations to be deployed in Somalia. Uganda's opposition party, Forum for Democratic Change, called on President Yoweri Museveni to withdraw his peacekeepers, stating that there is no peace to keep in Somalia and Uganda has no strategic interest there. The party indicated that if they were to win elections in 2011, they would plan a withdrawal. According to party spokesman Wafula Oguttu, Uganda is sacrificing its children for no reason. Analysts believe that a sustained bombing campaign would harm Uganda's investment climate, but a single attack would not likely deter major companies like Tullow Oil from investing in the country. Foreign direct investment in the third largest economy in East Africa has increased significantly due to oil exploration near the western border with the Democratic Republic of Congo. One American citizen was killed in the incident, and five others who were injured have been transported to Johannesburg and Nairobi for treatment. The U.S. State Department has confirmed that an FBI team is currently in Kampala.