September 11, 2011 (Sunday)
Armed conflicts and attacks
- Tenth anniversary of the September 11, 2001 terrorist attacks:
- Memorial ceremonies are held at New York's Ground Zero and elsewhere in the United States, to commemorate the tenth anniversary of the September 11 attacks. Ceremonies are also held worldwide to mark the anniversary of the attacks. (Yahoo News via AP)
- The National September 11 Memorial, located on the site of the former World Trade Center, opens in New York City. (Daily Sundial)
- A truck bomb at a military outpost in Wardak Province, Afghanistan, kills several civilians. (Miami Herald)
- Police in Gothenburg, Sweden, arrest four people after a suspected failed terrorist attack. (Sky News)
Disasters
Law and crime
- UK police raid the Greenacre caravan site in Leighton Buzzard, rescuing 24 men who had been held there as slaves in squalid conditions . (The Guardian)
Politics and elections
- Voters in Guatemala go to the polls for a general election. (Christian Science Monitor)
Sport
- In tennis, Samantha Stosur of Australia wins the Women's Singles in the 2011 US Open, defeating Serena Williams of the United States 6-2, 6-3. (New York Times)