What caused Anthony Azzopardi, 68, to drown in the Cospicua dock two weeks ago may remain a mystery because CCTV footage did not capture the moment he fell in the water.

So far, the police have not yet managed to track down anyone who witnessed what happened.

Mr Azzopardi’s body was found floating, face down on May 8. At about noon, teenagers Christian Martin and Dynalee Vella spotted the corpse while walking along the promenade and alerted the police.

Police officers recognised Mr Azzopardi, from Ħamrun, because he was familiar to them from the days when he used to work as a parking attendant in the Valletta ditch known as the Yellow Garage.

An autopsy the following day concluded that the cause of death was drowning. No signs of foul play or violence were found.

Mr Azzopardi’s daughter, Joanne, launched a public appeal for information urging anyone who could have seen what happened to come forward.

She said her father could not swim and was afraid of the water.

She said the only items found on him were the house keys, a cigarette lighter and a tissue in his back pocket. €300 he was carrying were missing. She had last seen him the evening before, when he visited her house carrying the €300, which he had saved to buy her a TV set.

Anyone who has any information can contact her on 7703 2444.