World News Roundup Late Edition

Sophomore suspected of opening fire at a Michigan high school, killing 3 students and injuring 8 others. Health officials say they're actively searching for the Omicron variant in the U.S. Former Trump White House chief of staff cooperating with the House select committee investigating the Capitol riot. Markets tank on Fed chair statements.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.