A man and a woman in their 20’s have been arrested on suspicion of murder.
Police are also examining a scene at Church Gate apartments in the Mill Street area of Comber.
Detective Chief Inspector John McVea said,"I appeal to anyone who was in or around the Church Gate Studios late last night or earlier this morning and heard a disturbance or noted any suspicious activity to contact Detectives at Newtownards 101."
Belfast SDLP councilllor Declan Boyle expressed his shock at the discovery of the body and urged people to help police with their enquiries.
''The entire community is in shock after the discovery of the body in the Windsor Road area off Lisburn Road on Sunday morning. I would like to express my sympathy to the family of this young man as they come to terms with this sudden loss.
"I urge anyone who was in the Windsor Road area last night to contact the police if they saw any suspicious activity last night or early Sunday morning," he said.