Second man arrested over fatal throat stabbing

A second man has been arrested in relation to a fatal stabbing in Sydney's south west overnight.

News South Wales police have apprehended a 24-year-old male, who presented at a Campsie station around 3.30pm today. The Lakemba local is being questioned in relation to the death.

Earlier today, authorities arrested a 48-year-old man, who is expected to be released from custody soon.

A 45-year-old died in an apparent stabbing attack, which police have described as a callous act on a defenceless person.

At around 12.30am on Sunday emergency services were called to Garrong Rd in Lakemba to find an injured man outside a block of units.

Police said the victim's father found him injured at the apartment building where he lived and tried to administer aid, however the man died at the scene.

"What we have been able to establish is that at around 12.30am a 45-year-old male was standing outside talking to a relative. He was approached by another male, a brief discussion occurred and as a result that 45-year-old man was assaulted, receiving neck injuries," NSW Police Detective Superintendent Michael McLean said.

It's understood the attacker was in possession of a bottle, police said.

At around 9:30am this morning heavily armed police executed warrants at three premises at Lakemba in relation to the death, which police are treating as suspicious.

The riot quad enters a property at Lakemba. Photo: 7News

Detective Supt McLean told media the region enforcement squad was utilised as a result of a risk assessment of the history of the premises, which identified that it was appropriate for police to be heavily armed.

It's believed the victim's two teenage children were inside at the time of the attack.

Detective Supt McLean said there is nothing which would suggest the victim provoked the attacker.

Photo: 7News

"There was no provocation whatsoever that our investigation suggests," Detective Supt McLean said.

"The incident occurred within seconds of the first encounter."

Police described the man's death as senseless, unnecessary and the result of a malicious attack.

Photo: 7News

A neighbour told News Corp that incidents occur often at the residence where the man was found dead.

“There are always brawls in that building,” he said.

Another neighbour, in his 60s, said he hadn't seen any incidents like this in the area in over a decade.

“I’ve been here 11 years in this street. You see the police sometimes pass by but we’ve never heard anyone screaming or a bashing, we’re very happy with this street,” he said.

“These days every street you go, doesn’t matter what area you go, sometimes there’s people dealing drugs and strange people.”

Police are treating the death as suspicious.

“This is absolutely heartbreaking for the man’s family," Detective Supt McLean said.

"They have requested privacy at this time as they try to come to terms with the death of their husband."

Anyone with information is urged to contact Crime Stoppers on 1800 333 000