A 56-year-old man was attacked on a park bench in broad daylight while eating breakfast near a Sydney train station this morning.
Members of the public found the dead man near the Forrest Road Entrance to Hurstville Railway Station just after 6am today, police said.
He had stumbled through a group of women practicing Tai Chi looking for help before falling to the ground, unconscious.
“He just received major, major trauma and major lacerations to the body,” Inspector David Ralph said.
“It does appear he has walked at least 20 metres or so before he fell to the ground. As I turned up, ambulance were working on him and so were police.”
Witness Murray Codd described to 9NEWS the scene at the train station this morning.
“There was just a big trail of blood leading up to the ramp and then where old mate was laying on the ground,” Mr Codd said.
“I’ve come around the corner and I’ve seen old mate on the ground, the ambos all around him and the cops told me to go back.”
By 7.30am, police had swooped on a rental property at nearby Patrick Street.
They arrested Brian Lee, 29, and seized his car.
“Police also located an edged-weapon, which they’ve taken,” Inspector Ralph said.
Neighbours told 9NEWS that Lee had only moved into the property a couple of weeks ago and kept to himself.
A large crime scene remains in place near the station.
Police still do not know what happened between the two men this morning or whether there was a motive.
Lee remains in custody and is yet to be charged.
Hurstville is about 16km south of the Sydney CBD.