Five stories to know for April 13: Protests continue after Minneapolis shooting, Knoxville school shooting, Japan nuclear waste water, Derek Chauvin trial and Russia warns U.S. on Crimea.

1. Minnesota police released body camera footage that shows police officer Kim Potter apparently drawing her gun by mistake, instead of her Taser, when she shot a young Black man, Daunte Wright, to death during a traffic stop. Protests continued overnight in Minneapolis following the incident.

2. A Knoxville school shooting ends with a student shot and killed by police and one officer wounded. Police said the high school student opened fire on them in a campus bathroom, wounding an officer.

3. Prosecutors neared the end of their case in the Derek Chauvin trial. George Floyd’s younger brother Philonise Floyd gave emotional testimony about how his sibling grew up obsessed with basketball and doting on his mother.

4. Japan will release more than 1 million tons of contaminated water from the destroyed Fukushima nuclear plant into the sea, the government said, a move China called “extremely irresponsible,” while South Korea summoned Tokyo’s ambassador in Seoul to protest.

5. Russia warned the United States to ensure its warships stayed well away from Crimea “for their own good,” calling their deployment in the Black Sea a provocation designed to test Russian nerves.