Two people have been arrested over firearms offences after a raid at a house in St Helens.
Police also executed a warrant on Thursday morning at an address in Widnes.
The raids were part of an ongoing firearms investigations.
Officers detained a 30-year-old woman and a 23-year-old man from the Hough Green area in Widnes on suspicion of conspiracy to possess firearms with intent to endanger life.
The pair are currently in custody being questioned by detectives.
Det Chief Insp Mark Tivendale, from Merseyside Police’s Matrix Serious and Organised Crime Unit, said: “We work closely with neighbourhood officers to track down those responsible for firearms offences and rely on the community to be our eyes and ears to tell us about anything they may know about crime in their area.
“We are fully committed in tackling this type of crime and if anyone does have any information about these incidents, or have any information about gun or drug-related crime can contact the matrix team on 0800 230 0600 or Crimestoppers, anonymously, on 0800 555 111.”