Four people have now been arrested after the incident.
Baseball bats, hurls and golf clubs were some of the weapons used by the group of adults involved in the dispute which broke out in the Arden View area of Tullamore.
Four people have been arrested in relation to the incident.
One man suffered suspected stab wounds and remains in the Midlands Regional Hospital this morning.
Inspector Ollie Baker from Tullamore Garda Station says this type of violence can have a disturbing effect on communities:
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