YAOUNDE, Cameroon—Cameroon authorities have blamed a deadly stadium crush at the African Cup of Nations tournament on a “massive” influx of ticketless fans who arrived late to a game involving the host team and tried to force their way in to avoid security checks and COVID-19 screening. In response, the government ordered 250 extra police officers for Cameroon’s next game, a quarterfinal against Gambia on Saturday at a different stadium. The stampede at Monday’s Cameroon-Comoros last 16 match at the African Cup’s main Olembe Stadium in the capital of Yaounde left eight people dead and another 38 injured, seven of them seriously. It was one of the worst stadium disasters in the history of Africa’s biggest soccer tournament. Cameroon Sports Minister Narcisse Mouelle Kombi said at a news conference on Friday that the full results of a government investigation were not yet available, but he did reveal some new information. …