The owners of two nightclubs on the Greek island of Mykonos, whose employees have been implicated in the murder of young Maltese-Australian Doujon Zammit, are to be questioned this week, Richard Vella Laurenti, Malta's Ambassador in Greece, told The Times.

The 25-year-old bouncer who allegedly bashed Mr Zammit with a baton has now been charged with voluntary homicide while three other staff members were charged as accessories. All four bouncers are to give supplementary evidence today.

Meanwhile, a 30-year-old coast guard who allegedly witnessed the beating taking place but failed to inform the authorities has been suspended from his post. A Merchant Marine Ministry source told the Greek media that the coast guard was suspended after his name was mentioned in the testimony of one of the four bouncers. The same source said the coast guard had been a member of the coast's elite unit. The coast guard was not physically involved in the attack.

The 20-year-old died after he was bashed into a coma by a bouncer outside the Tropicana club on Mykonos on July 28, a day after he left Malta. Three days later his father Oliver took a heart-breaking decision to unplug his son's life-support machine. The young man's organs were donated.

In a letter to Dr Vella Laurenti, dated August 4, Ioannis Papadimitriou, president of the board of directors at the Onassis Cardiac Surgery Centre, expressed the centre's gratitude for the donation.

"This tragic father having lost his son under brutal circumstances was able to elevate himself above his understandable wrath in order to donate his son's organs to Greek transplant candidates," the letter read. Dr Vella Laurenti said that Prof. Papadimitriou ended his letter saying "the history and the traditions of the ancient people of Malta influenced this gallant man to offer to all of us a shining example of humane behaviour". Together with his cousin Cameron Tabone, who suffered a broken nose and wrist in the attack, Mr Zammit had travelled to Dubai, Rome, Venice, Barcelona, Ibiza and Malta before heading for Greece.

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