A MAN was sprayed in the eyes with an unknown substance last night.

Police say it followed an altercation at around 8.30pm in Holbein Square between two men who were known to each.

A 33-year-old man was treated at Great Western Hospital for injuries to his eyes after being sprayed. Police are unsure as to what the substance was.

A 48-year-old man has been arrested in connection to the incident and remains in custody. Enquiries are ongoing.