A man who was seen submerging his head in the River Dee in Chester and a corpse discovered on the banks of the Mersey in Frodsham are among the unidentified bodies on Cheshire police's books.

Mystery surrounds the four unknown persons found across Cheshire between 1980 and 2005.

It is 30 years since a man aged between 65 and 75 and described as being of thin build was spotted on the evening of August 24 putting his head in the Dee.

He had short, grey hair, hazel eyes and was lacking his lower teeth.

When he was found, he was wearing a black suit, white shirt, black patterned tie and black lace-up shoes, and he had £9.46 and a packet of 'No 6 JP' cigarettes in his possession.

A picture of him can be found on the Missing Persons Bureau website.

A 'stocky' man whose body was found in Frodsham, on the banks of the River Mersey near to where it joins the Manchester Ship Canal, on September 11, 1983, is estimated to have died 12 days before.

He was believed to be aged between 40 and 60 and he had receding grey hair.

Distinguishing features include two front teeth smaller than the rest.

A middle-aged man is believed to have been dead five days before he was found in a field in Twemlow Green near Holmes Chapel on June 6, 2005.

The oldest case relates to the decomposed body of a man recovered from the Mersey in Widnes on July 29, 1980.

He is believed to have been in the water two to three weeks.

A spokesperson for Cheshire Constabulary said: "We have no active lines of inquiry but if publicity does prompt anyone to have any concerns about these unidentified persons, they should contact us on 101."