Emergency services were called to Dymchurch Road shortly before 3.30pm to reports a man, aged 46, had a suspected cardiac arrest in the front garden of a property.
Paramedics attended and he was sadly pronounced dead at hospital a short time later.
Enquiries are ongoing to establish the circumstances of his death, and to formally identify the man and inform his next of kin.
At this time officers are treating the death as unexplained and a post mortem will take place to establish the cause of death.
Anyone with information is asked to contact Merseyside Police social media desk via Twitter @MerPolCC or Facebook Merseyside Police CC. You can also call 101 quoting incident reference 19100204754 or contact the independent charity Crimestoppers anonymously, on 0800 555 111 or via their online form at: https://crimestoppers-uk.org/give-information/give-information.