The pictures of the 14 men listed below have been released by South Yorkshire Police to help locate them.
Anyone who has any information about the most wanted men should call officers on 101 or contact anonymous charity Crimestoppers on 0800 555111.
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1. Ahmed Farrah
The 29-year-old is wanted by officers over the murder of Kavan Brissett - a 21-year-old man who was stabbed to death in Upperthorpe in August 2018. Farrah - who is also known as Reggie - is said to have links to the Broomhall area. Photo: South Yorkshire Police
2. Mohammed Anwaar
Officers are seeking to locate Mohammed Anwaar after he failed to appear in court to be tried over a series of drug charges. The 29-year-old who is said to have links to Sheffield, Manchester, Birmingham and Derbyshire, was charged with conspiracy to supply Class A drugs, money laundering, possession of cannabis and a firearm. Photo: South Yorkshire Police
3. Keighran Michael Green
Green is wanted by police in Barnsley in connection with reported criminal damage and threats to kill offences. The 30-year-old is believed to frequent the Goldthorpe and Thurnscoe areas of Barnsley. Photo: South Yorkshire Police
4. John Eric Wells
Police are seeking 61-year-old John Eric Wells after he is alleged to have scammed three victims out of more than £400,000 in high value romance frauds. The man who is originally from South Yorkshire is also known by the names Howard Walmsley and Howard Hemmings. Photo: South Yorkshire Police