Police in Bristol were on the alert after a bus driver reported seeing a six-foot crocodile on the loose.
Avon and Somerset police Chief Constable Nick Gargan said that a bus driver flagged down an officer claiming to have spotted the large reptile under a bridge.
Officers searched for the beast but were unable to find any trace under Coronation Bridge, Bristol.
A spokesperson said: "We were called at 10:28am on Monday, February 3, to reports of a crocodile sighted on Bedminster Bridge. We carried out a search of the area but found no trace of the reptile."