Knives were recovered and nearly 70 people searched as part of a crackdown on serious and violent crime in the Kirkby area.
It followed the murder of James Halewood, who was fatally stabbed over the weekend, and another incident in which a man was shot near to the Windmill pub on Friday evening.
Under special powers given to the police - known as 'Section 60 orders' - officers can stop and search a person without suspicion.
Two such orders have now been completed and a third began at midday today.
A total of 68 people have now been searched under the orders which have been in place in the Kirkby area over the past four days.
One resulted in an arrest for the possession of a knife; two resulted in drug warnings for cannabis; two resulted in penalty notices for cannabis and one resulted in a person being warned in for interview under caution for cannabis possession.
Two knives were also recovered.
James 'Jay' Halewood, 21, was stabbed near a shopping parade at the Park Brow Drive and Broad Lane junction in the Southdene area just before 1pm on Sunday.
A huge wall of floral tributes now marks the scene, which has been extensively examined by forensics officers. So far no arrests have been made.
Knowsley Community Inspector Peter Rexwinkel said: "We don’t take the decision lightly to introduce s60s but they are a valuable tool for us as part of our activity to tackle serious and violent crime.
"We want our communities to feel reassured that officers are out and about in the areas where they are needed and act as a visible deterrent to anyone wanting to commit criminality.
"It is particularly important that the public feel safe and confident to go about their daily business, particularly when there have been serious incidents in their neighbourhoods."
