The 20-year-old man is from the Norwich area and has been detained for questioning, Norfolk Police said.
Earlier on Tuesday an 18-year-old man was also arrested in connection with the incident and remains in custody.
The first person arrested on Monday, a 16-year-old boy also from the Norwich area, has been released on bail.
The stabbing victim, Tafadzwa Kahn, was from St Giles Street in Norwich. Read More