Bundesliga side FC Koln have confirmed that three people at the club have tested positive for coronavirus and have gone into quarantine.
The German side recently returned to training in groups and had the entire playing squad, as well as the coaching and background staff tested for the virus this week.
A statement on the club's website read: "Three people tested positive, all are symptom free. After an assessment of the cases by the responsible health authorities, the three people who tested positive will go into a 14-day quarantine at home.
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"FC Koln will not confirm any names out of respect for the privacy of those affected.