Evaldas Svolkinas's body was found in Carter's Brook last month. Picture: Met Police

An undiscovered bag could be the key to solving the mystery behind the death of a man found in a Noak Hill stream last month.

The rucksack has three small silver images of 'power tools' at the top. Picture: Met Police

Evaldas Svolkinas, 34, was found with fatal head injuries in Carter’s Brook, near Wincanton Road, on December 16. The carpenter failed to show up for work three days earlier after leaving his home in Dorking Rise.

Police believe he was murdered. They have now released an image of a rucksack identical to the one owned by Mr Svolkinas. It has not been found.

Officers have also revealed he was a frequent gambler and was in debt to several people.

Investigating officer, DCI Chris Jones said: “The rucksack has three small silver images of ‘power tools’ at the top of the bag and the word ‘Festool’ embossed in the black section toward it’s base.

“Evaldas was a well known member of the Lithuanian community in east London. He worked within the construction industry and employed members from his community to work on projects in the south east.

“Investigations have established that Evaldas was a frequent gambler which led to him experiencing significant financial troubles owing monies to numerous persons.

“This is a line of enquiry we are exploring and I would appeal to any person, specifically members of the Lithuanian community who may have information on what happened to Evaldas or his lifestyle to contact the investigation team.”

Anyone with information should contact the incident room on 020 8345 3734 or call Crimestoppers anonymously on 0800 555 111.