A man was rushed to hospital after an alleged incident in which was hit with a hammer.
Officers were called to Carr Mill Road in St Helens by the ambulance service after they were called to the scene.
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It is believed a 40-year-old man was attacked with a hammer by two men.
The victim was taken to hospital where he condition is described as stable.
Police say two suspects fled the scene in a car after the attack.
A 22-year-old man and a 43-year-old man, both from St Helens, were arrested a short time later on suspicion of assault.
If you have any information about the incident contact Merseyside Police social media desk via Twitter @MerPolCC or Facebook Merseyside Police CC.
People can also call 101 quoting incident reference 18200123168.