Police are investigating two incidents of alleged assault at Macbeth's public house in Victoria Street, Douglas.
The first is believed to have taken place at around 9.30pm on Thursday evening in the pub toilets.
A second incident, involving two men and a woman, is also understood to have taken place an hour later just outside the premises.
A 23 year-old man has been arrested in connection with the second incident and charged with a number of offences.
Anyone who witnessed either incident is asked to contact Constable Paul Kemp at Lord Street police station on 631212.
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