The incident is thought by police to have been the result of a personal dispute.
Two men were taken to hospital after being shot outside a pizzeria in the eastern town. One of the men was shot in the knee, the other in the foot.
A warrant has been put out for the arrest of a further two men, aged 19 and 20, wanted on suspicion of attempted murder.
Having identified the suspects as local residents, police expect to be able to arrest the men in the near future.
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