A murder investigation has been launched after a man died in hospital. The victim in his 30s, was found in a property in Chatham High Street on Monday at around 4.55pm He was rushed to a London hospital via air ambulance where his death was later confirmed. Police have now launched a murder investigation after it was alleged he was assaulted earlier in the day between 11am and 2pm in Magpie Hall Road, near the junction with Newnham Street. Detectives are also investigating claims he was assaulted during a previous incident in the High Street between Upbury Way and Insititute Road on March 30 a…