the city reported 18 cases of covid19 on friday even as 20 other patients were said to have recovered from the illness on the day six patients showed symptoms of cough and cold and were put under category of influenzalike illness before testing positive kolkata cops have arrested one of the masterminds of a fake call centre that was being operated from park street and netaji nagar the accused shambhu singh 32 who had targeted hundreds of canadian nationals was arrested from golf green on monday so far five persons have been arrested in this case while two others are still on the run cops from the netaji nagar ps started the probe and then transferred it to cyber police station said dc atul v tnn