Cambridgeshire Police are hailing a knife amnesty in Peterborough a success.
About 50 knives were handed in during the campaign last month.
Amnesty bins were at Thorpe Wood Police Station, Bridge Street Police Station and Bayard Place, in Broadway, throughout October.
It was in response to an increase in robberies involving a knife in Peterborough.
Detective Inspector Tim Nasta told Connect FM: “This means that 50 knives have been taken off the streets of Peterborough, which is great news.
“The figure for robberies involving a knife in Peterborough is low but rising and this amnesty can only help our efforts to drive it down.
“We will also continue our work in schools to warn of the dangers and repeat the message that it’s just not worth carrying a knife because it could ruin your life.”
All the knives collected will now be donated to the British Ironwork Centre, in Oswestry, which is running a Surrender a Knife, Save a Life campaign.
As part of the campaign, which aims to raise awareness of the devastating impact of knife crime, a 26-foot high knife angel is being created using knives handed in across the country.
Between September 1 last year and September 1 this year, there were 41 robberies in the city involving a knife or bladed instrument. For the same period 2013/14, there were 20.