Police investigating a series of 10 robberies which saw many of the victims attacked from behind and knocked unconscious have arrested three men.
The men, aged 28, 29 and 31, have been questioned about 10 incidents in the West End area of Leicester between mid-May and Sunday, June 19.
Previously, a 26-year-old man has been arrested and questioned.
All four suspects, who are from Leicester, have been released on police bail while detectives conduct further inquiries.
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