DETECTIVES believe a middle-aged man was stabbed to death outside a Sydney train station by a 29-year-old man in a “random” weekend attack.

Brian Lee was charged with murder after the victim — 56-year-old Klaus Petr — was found by members of the public near Hurstville train station on Saturday morning.

Police say the victim suffered “severe lacerations”.

They seized an “edged weapon” when arresting Lee nearby, less than 30 minutes after the attack.

Lee lives on Patrick St just north of the train station. Police allege Mr Petr was killed just after 6am in a small park near the station.

He was found near the station entrance by people who had been practising tai chi in the nearby park.

It’s believed he may have been sitting in the park reading a bible when the alleged attack occurred.

Lee was arrested following a tip-off from the public.

It is understood it was his brother who rang authorities.

A NSW Police Force spokesman said detectives do not believe Lee knew the victim.

“It appears to be random,” the spokesman said.

Lee was charged with murder on Sunday but was not required to appear when his matter was briefly mentioned in Parramatta Local Court. He will return to court in March.