Three people have been arrested after a plethora of weapons were seized by police in Kirklees last night.
A hammer, a hunting knife and a kitchen knife were among the tools taken from a vehicle that failed to stop for officers.
Later that evening a man in his 40s was stabbed to death in Oakes, near Huddersfield. The incidents are thought to be unrelated.
A photograph of the weapons was included in a tweet by PS Rebecca Calpin, who said: "These weapons were seized from 3 people arrested after a failed to stop last night.... later in the evening the same officers were guarding a murder scene as a result of a stabbing.
"Knife crime is a very real and present threat which needs to stop."
It follows a number of incidents in North Kirklees this month.
One saw a Batley shopkeeper receive minor injuries after wrestling a would-be robber from his Branch Road newsagents.
A teenager was charged with possession of a bladed article after an incident at Spen Valley School in Liversedge.