Earlier the court heard from Det Sgt Colin Lorimer, who was the inquiry officer.
Det Ch Insp Martin Brunning said officers were treating the man's death as an "isolated incident".
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Det Ch Insp Ian Pollard said it showed him wearing glasses which significantly changed his appearance.
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Det Donohue, who was married with two children, was shot without warning by the gang.
"I sent numerous emails (to Greece) but they just did not respond, " said Det Insp Harris.
Det Con Scott Jardine said most of the incidents were linked to East Asian crime gangs.
Det Insp Arwyn Jones of North Wales Police said there was concern about Mr Davies' disappearance.
Det Sgt Martin Eaton said officers would be visiting the area and speaking to residents.
However, Det Ch Insp Lucy Robinson said the exact time of their deaths remained unclear.
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Det Insp Adrian Gathercole said they are still looking for a "critical breakthrough" in the investigation.
Det Ch Insp Dave Andrews said the dispute happened at about 18:00 GMT on Tuesday.
Det Ch Insp Noel McHugh said the four men were "highly manipulative, evil and dangerous individuals".
Detail about the aftermath of the shooting also emerged as Det Botha answered questions.
"Each one of these thefts left the victim understandably shaken, " said Det Sgt Oana King.
Det Insp Mike Pirie said the case highlighted the lethal combination of knives and alcohol.
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The main feature of the game concentrates more on unraveling the case as Det.
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Det Insp Ruth Dodsworth said the incident had been a "devastating experience" for the woman.
The defence accused Det Botha of putting the "worst possible interpretation" on the evidence.
Speaking after the hearing, the investigating officer, Det Con Trystan Davies, welcomed the sentence.
Det Ch Insp Dave Pester, from Greater Manchester Police, appealed for witnesses to come forward.
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Det Sgt Scott Machin said the burglar clearly knew the value of the haul.
Det Supt Adrian Green of Durham Police said the two-year investigation had been "complex".
Investigating officer, Det Con Steve Graves, said there were concerns over the difficulty retrieving BBM messages.
Det Insp Chris Wilson said they were both "still recovering from their terrifying ordeal".
Det Sgt Rapley said depicting works by more modern artists, especially Picasso, was popular with fraudsters.
Det Garda Adrian Donohoe was killed at Lordship Credit Union at Bellurgan on 25 January 2013.
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Det Con Mike Taylor said the thieves got a high value haul from Bramley Golf Club.
Det Garda Donohoe was one of two detectives on escort duty when the robbery happened.
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Det Ch Insp Karen Baxter said the majority of such incidents were fuelled by alcohol.
Det Insp Louise Hemingway said a number of items had been sent off for testing.
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