More than 40 knives surrendered to King's Lynn police during amnesty campaign
Dozens of knives were surrendered to police in Lynn during an amnesty campaign earlier this month.
Senior officers have today welcomed the impact of Operation Sceptre, but warned police cannot solve the problem alone.
Lynn's police station was one of three main sites across Norfolk where weapons could be surrendered during the week-long campaign.
A total of 43 knives were handed in at Lynn during the campaign, out of 237 across the county as a whole.
A further 26 weapons were seized and 11 people were arrested, of whom four were later charged, for suspected knife-related offences.
Machetes, samurai swords, daggers, hunting knives and flick knives were among the weapons surrendered.
Chief Superintendent Dave Marshall said the amnesty had made a "significant" impact, but admitted more work is needed.
He said: "Police tactics alone will not prevent knife crime and solutions must involve action from education, health, social services and communities themselves. We all have a duty to protect our communities from harm and keep them safe.
"If you know someone who carries a knife, then please contact police. One call could help protect them or potentially save someone else’s life."
Anyone who may suspect someone is carrying a knife should call police on 101 or Crimestoppers on 0800 555111.