NEW YORK (AP) — The NFL revealed Sunday that several positive COVID-19 tests were found a day earlier by one of its testing partners. Among teams reporting false positives, the Minnesota Vikings said they had 12, the New York Jets 10 and the Chicago Bears nine. The league has asked the New Jersey lab BioReference to investigate the results “while the clubs work to confirm or rule out the positive tests.” The NFL did not identify the teams or say how many tests were positive. Other teams that were affected are the Buffalo Bills, Pittsburgh Steelers, Philadelphia Eagles and Cleveland Browns. The NFL uses BioReference for all of its COVID-19 testing, though tests are handled by labs throughout the nation to ensure teams get results quickly.