German authorities are trying to trace everyone who attended a church service in Frankfurt this month after more than 107 people tested positive for the coronavirus.

According to Reuters, churches in the state of Hesse, where Frankfurt is located, have been able to hold services since May 1 following the easing of coronavirus lockdown restrictions, provided they adhere to official social distancing and hygiene rules.

“This situation shows how important it is that all of us stay alert and avoid becoming careless, especially now during the easing of restrictions. The virus is still there and will spread,” Hesse state health minister Kai Klose said.