Mexican drug war An unknown gunman shoots and kills veteran journalist Javier Valdez Cárdenas, who is noted for his investigative reporting on Mexico's war on drugs, in Culiacán, Sinaloa.
Moors murderer Moors murderer Ian Brady, one of a pair of killers whose victims from 1963–65 were five children aged between 10 and 17, dies at the age of 79.
Voter ID laws in the United States The U.S. Supreme Court rules that the North Carolina state legislative members do not have standing to request an appeal of the U.S. Court of Appeals for the Fourth Circuit ruling against a law which it found discriminated against black voters.
Ouagadougou A trial at a court in Ouagadougou, Burkina Faso, opens to try former President Blaise Compaoré and members of his cabinet in absentia. Burkina Faso accuses Compaoré, who is in exile in the Ivory Coast, of ordering the killing of protesters during the uprising that ousted him in 2014.
Papua New Guinea Papua New Guinean media reports confirm that 17 people were fatally shot by prison officers during a prison escape in Lae on May 12.
US President According to a current and a former unnamed U.S. government official, President Donald Trump revealed classified information that jeopardized a critical source of intelligence on the Islamic State during his Oval Office meeting with the Russian Foreign Minister and Ambassador on May 10.
Carcinogen A small study shows that two known carcinogens, o-toluidine and 2-naphthylamine, were found in greater amounts in the urine of e-cigarette users than in nonusers. Previous studies of traditional cigarette smokers have identified o-toluidine and 2-naphthylamine as the two most carcinogenic molecules for the bladder.
Philadelphia A Philadelphia-originating Learjet crashes in Carlstadt as it approached Teterboro Airport in New Jersey, killing at least two people.
Western Digital Western Digital appeals to arbitration in an effort to prevent its partner Toshiba, from selling its chip-making operation, Toshiba Memory.