San Francisco police on Friday said they have received reports of people going door-to-door and claiming to be employees of the Centers for Disease Control and Prevention or the San Francisco Department of Public Health.

"These subjects are apparently asking for entry into residences to conduct inspections or searches," police said in a news release.

City officials have responded by having employees and volunteers place informational door hangers in neighborhoods. "These persons will have city identification, and will not ask for permission to enter any residences or establishments," the department said.

In addition to City Disaster Service Workers placing information door hangers in various neighborhoods, Health Inspectors from the Health Department are conducting inspections at Single Room Occupancy buildings.

SRO building owners and managers were notified in advance that health inspectors would be asking for entry to enforce health orders.

Under these health orders, SRO buildings will be checked to see if the order has been posted and delivered to each tenant, the community areas are being cleaned and disinfected daily and a cleaning log is being maintained, and to see if the bathrooms have soap for all sinks or sanitizer if there's no sink.

Department of Public Health inspectors can validate their identity by showing their City Disaster Service Worker ID, DPH employee ID and Health Inspector Badge.

Police ask the public to call 911 and report anyone coming to the door claiming to be employees of the Centers for Disease Control and Prevention or the San Francisco Department of Public Health. Callers should provide a description of the person and as much detail as possible.