Investigations are continuing into the incident in North Lynn week which left six people in hospital.
Police were called to reports of a disorder involving a group of people in Seabank Way on Tuesday, September 12 at around 1.50pm.
MORE: Six people hospitalised following 'serious assault' in North LynnSix people were taken to the Queen Elizabeth Hospital in King's Lynn for treatment after sustaining injuries.
Since then four people have been discharged.
Three people, two men and a woman, were arrested in connection with the incident.
A man and woman, both aged in their 40s, have subsequently been released under investigation whilst the enquiry continues.
A police spokesman said all those involved in the incident are believed to be known to each other.
A seal was put in place at the scene whilst initial enquiries were carried out but this has now been lifted.
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