A hoax caller led to a bomb scare in Sheffield city centre.
Police were called to Howden House - a Sheffield Council building on Union Street - following a report of a bomb in the building yesterday afternoon.
Staff were evacuated and a search was carried out.
There was no device found.
Police chiefs stress the incident is not related to specialist counter terrorism officers making two arrests in Sheffield earlier this week.
A South Yorkshire Police spokesman said: “Police were called at around 12.20pm on Thursday to Howden House in Union Street, following information received about an alleged bomb threat.
“The building was evacuated by the local authority as a precautionary measure while it was searched.
“There was no device and there is no evidence to suggest that this was a credible threat.
“Enquiries are ongoing.
“Officers would like to stress that this incident is in no way linked to the activity by South Yorkshire Police and the North East Counter Terrorism Unit earlier this week.”