A 28-year-old woman, who died after a knife attack at the travel agents where she worked, has been named locally as Cassie Hayes.
A man has been arrested on suspicion of murder following the "domestic related" incident at the TUI store in Chapel Street, Southport on Saturday. (13 January).
Police were called to the scene at around 13:25pm following reports that a woman had been injured. Ten police vehicles and two air ambulances arrived at the travel agents where the 30-year-old suspect was arrested.
The woman was transported to hospital where she later died. Her next of kin have been informed BBC News reports.
In a statement a TUI spokeswoman said: "We regret to confirm that a female member of staff at our Southport TUI retail store tragically died in an incident today. We send our deepest sympathies to the friends and family of the staff member involved.
"We're doing everything possible to assist the local police with their investigation and support our customers and staff at this difficult time."
Family and friends have been paying emotional tributes to Cassie on social media. Her partner, Leah Mcdonald, said on Facebook: "My absolute world i love you so so much have done since we first met i promise i will look after our girl the best i can."
In a statement Merseyside Police said: "Merseyside Police can confirm a murder investigation has been launched following an incident in Southport today, Saturday 13th January.
"Officers were contacted at 1.25pm following reports that a 28-year-old woman had been injured at the TUI travel agents on Chapel Street. A 30 year-old man from the Southport area has been arrested on suspicion of murder and is currently being held in custody. It is believed that the incident was domestic-related."