At least 50 people are killed and an unknown number are kidnapped, including women and children, when gunmen attack the village of Yargoje in Katsina State, Nigeria.
It is reported that wildfires have burned around 32,000 hectares (79,000 acres) of tropical wetland in Brazil's Pantanal so far this year, a 935% increase in the number of fires that occurred in the same period last year.
Poland announces a "no-go zone" in the Białowieża Forest in order to prevent migrants from crossing the border from Belarus. In response, concerns are raised about the potential impact on tourism during the summer.
Four American instructors from Cornell College in Iowa, United States, and one Chinese passerby are wounded in a stabbing attack at a park in Jilin City, China. The perpetrator is arrested a day later.