• An explosive device is detonated in a commercial center in the Colombian city of Cúcuta, on the border with Venezuela, with at least 12 injured. (La Vanguardia) (El Universal)
• Six explosive devices detonated in several locations in Kirkuk, Iraq kill 5 people and injure 20 others. (Reuters)
• War in Afghanistan (2001–2021)
  • A suicide bombing near a military training center in the Afghan capital city of Kabul kills 6 people and leaves 6 others injured. The Islamic State of Iraq and the Levant – Khorasan Province claims responsibility (Press TV)

• 2019 Bilderberg Conference
  • The annual meeting of the secretive Bilderberg Group takes place at the Fairmont Le Montreux Palace in Montreux, Switzerland. The Conference will last for four days. (The Washington Post)

• A study, published in the journal Science, finds a genetically enhanced fungus that produces spider toxin can rapidly kill huge numbers of the mosquitoes that spread malaria. Trials held in Burkina Faso showed mosquito populations collapsed by 99% within 45 days. The fungus did not affect other insects, such as bees. (BBC News) (Science)
• Measles resurgence in the United States
  • Sixty new cases in the past week are reported, bringing this year's total to 971 cases in 26 U.S. states – the highest since 1994. The CDC warns, "If these outbreaks continue through summer and fall, the United States may lose its measles elimination status." (BBC News)

• Mexico–United States relations
  • U.S. President Donald Trump announces a 5% import tariff on all products from Mexico, effective June 10 and rising in steps to 25% by October, "until the illegal immigration problem is remedied". (BBC News)
  • Mexican President Andrés Manuel López Obrador responds with a letter to the U.S. president stating he wants to avoid a confrontation, saying that ideals such as justice and universal brotherhood are more important than borders. He also ordered his foreign minister to travel to Washington on Friday. (Reuters)

• American songwriter R. Kelly is charged by Cook County prosecutors with 11 counts of sexual assault and abuse. (USA Today)
• Sinking of Hableány
  • The captain of the M/V Viking Sigyn that was involved in the deadly sinking of the Hableány is questioned and arrested by the Hungarian police. (BBC News)
• Jussie Smollett hate crime hoax
  • New documents reveal that Jussie Smollett bought drugs from Abimbola "Abel" and Olabinjo "Ola" Osundairo, the two people who accused him of staging an attack on January 29. (USA Today)

• Politics of Papua New Guinea
  • James Marape is elected Prime Minister by the National Parliament following the resignation of Peter O'Neill. (ABC)
• Abortion in the United States by state
  • Louisiana Governor John Bel Edwards signs a heartbeat bill that bans abortion as early as six weeks into pregnancy. The law’s effective date is tied to a similar Mississippi law which has already been temporarily blocked by a federal court. (BBC News)
• Presidency of Jair Bolsonaro
  • Fifteen days after the first wave of protests, millions of students, schoolteachers and university professors hold demonstrations in over a hundred Brazilian cities against massive cuts in the education budget. Brazilian Education Minister Abraham Weintraub accuses teachers of "coercing" students into participating in the protests. (The Guardian)

• 2019 NBA Finals
  • The Toronto Raptors host the first National Basketball Association (NBA) finals game in their franchise history, against the Golden State Warriors, and the first outside the United States in NBA history at the Scotiabank Arena in Toronto. The Raptors win 118–109. (NPR)