Two men charged over Adelaide shooting murder of Simon Middleton

Two men have been charged over the execution-style murder of Adelaide man Simon Middleton.

Matthew Draganoff, 44, and Matthew Harmati, 29, have faced Elizabeth Magistrates Court charged with murder.

Mr Draganoff applied for bail, however it was refused.

Both men will stay behind bars until their next court appearance in December.

Mr Middleton, 49, died in the early hours of March 8 on the rural outskirts of Adelaide.

READ MORE: Murder investigation launched after man shot dead in Adelaide

An investigation remains ongoing, with police seeking to determine the role of others - including a man and a woman - in the planning of the murder.

Police have also searched a further seven addresses in Virginia, Lewiston and Andrews Farm.

Anyone who noticed any suspicious activity in the vicinity of Brady and Leach Street in Virginia on the evening of March 7 or the morning of March 8 has been urged to come forward.

Police are also seeking dashcam footage of the same area between those dates, including vision of a 1998 Nissan Patrol - which has a broken rear left tail light - with the South Australian registration WDA-262 in Phineas Street, Virginia.

Anyone with information is urged to contact Crime Stoppers on 1800 333 000.