Officers were called to a flat on Mackie Avenue at around 3.30pm on Sunday, May 16, 2021, where they discovered the victim.
He was pronounced dead at the scene.
Police Scotland has now confirmed that a 35-year-old man and a 46-year-old man have been arrested and charged.
The pair were expected to appear at Greenock Sheriff Court on Tuesday, May 18.
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Officers were called to a flat on Mackie Avenue at around 3.30pm on Sunday, May 16.
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