April 4, 2009 (Saturday)
- The Llaima volcano in Chile begins emitting lava and ash, prompting evacuations and landslide warnings. (Sky News Australia)
- Three police officers are killed in Pittsburgh, Pennsylvania, United States. (CNN)
- The Organisation for Economic Co-operation and Development blacklists Costa Rica, Malaysia and the Philippines as non-cooperative tax havens. (BBC)
- A U.S. drone aircraft's missile kills 13 people in North Waziristan, Pakistan. (ABC News Australia)
- Danish Prime Minister Anders Fogh Rasmussen will become NATO's Secretary General on August 1. (Reuters)
- Six Frontier Corpsmen are killed during a suicide attack in Islamabad, Pakistan. (GEO TV)
- Mon Mome wins the 2009 Grand National in Aintree, England. (BBC)
- The Balochistan Liberation United Front releases United Nations official John Solecki from captivity in Quetta, Pakistan. (BBC)