ABUJA, Nigeria (AP) — Nigeria’s authorities on Tuesday called for caution over what they described as “veiled threats” against their citizens living in South Africa before both countries meet in an Africa Cup of Nations semifinal — a soccer match that is renewing frictions. Both countries already have endured a yearslong rivalry, more so because they have Africa’s biggest entertainment …

Calgary Flames (22-22-5, sixth in the Pacific Division) vs. Boston Bruins (31-9-9, first in the Atlantic Division) Boston; Tuesday, 7 p.m. EST BOTTOM LINE: The Boston Bruins host the Calgary Flames after David Pastrnak scored two goals in the Bruins’ 6-2 win over the Philadelphia Flyers. Boston has gone 16-4-3 in home games and 31-9-9 overall. The Bruins are 12-1-2 …

The effect of police violence on Black Americans is tracked in two new studies, with one tying police-involved deaths to sleep disturbances and the other finding a racial gap in injuries involving police use of Tasers. The health effects of police violence on Black people “need to be documented as a critical first step to reduce these harms,” three editors …