A 24-year-old man is believed to have been set upon by a number of attackers in Cathcart Street.
The victim suffered a head injury in the 4am attack on Saturday morning.
He was taken to Inverclyde Royal Hospital for treatment and was required to have eight stitches inserted in the wound.
If you can help police with their inquiries, call the 101 non-emergency number or make contact anonymously via Crimestoppers on 0800 555 111.
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