The man agonized minor injuries and a woman, aged 28, was detained on suspicion of attempted murder. The South Yorkshire police have salvaged a knife.
The force said that an investigation was being carried out to establish whether it was "an isolated occurrence and if the individual acted alone."
Police said the woman remained in custody and that "she is currently being gauged from a mental health perspective."
Previously, the South Yorkshire police had been receiving support from anti-terrorist officers.
Market trader Abdul Razzaq, 43, said he antagonized a woman after she pulled out "a huge kitchen knife" and shouted "kill" repeatedly as he gouged a man in the shoulder and then walked through the busy streets.
He said he had taken the knife out of its wrapper and put it in a bin near his station.
Mr. Razzaq described how he trailed the woman through the center of the city as shoppers moved out of their way.
He said he convinced her to leave the knife before the police officers made the detention.
Several stores closed during the initial police response. No other injuries have been narrated.
Reported By Umanga Buddhini Wackista-aratchie.
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