36 year-old William Moorehouse was found injured in a playground in Ballywaltrim in Bray on Sunday evening and was pronounced dead a short time later.
A man in his 30s, arrested as part of the investigation has been released without charge.
Seven people have been arrested in connection with his death - all have now been released without charge.
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Light rain
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Light rain
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Light rain
High: 18°C | Low: 15°C
Light rain
High: 18°C | Low: 15°C
Light rain
High: 19°C | Low: 15°C