Officers attended a property in George Street where the body of the man, aged in his 30s, was discovered.
His next of kin and family have been informed.
Acting Detective Chief Inspector, Adam Edwards, said:
“Please be reassured that enquiries are in hand and there is no wider risk to the public.
“Residents can expect to see an increased police presence in George Street and the surrounding areas while we conduct our investigation.
“We are urging anyone with information about this death to please make contact with us. We’re particularly keen to hear from anyone that may have seen, or heard, anything out of the ordinary in the area on the evening of Monday January 3, and into the early hours of Tuesday January 4.”
Anyone with information is asked to contact police on 101, quoting Operation Amaryllis or 44220003393.
Alternatively, you can contact the independent charity Crimestoppers 100% anonymously on 0800 555 111, or via their anonymous online form at crimestoppers-uk.org