Three men armed with club-like weapons have smashed their way into an elderly couple's home before bashing the man to death and assaulting his wife, police say.
Trucking company owner Keith Cini, aged in his late 60s, was killed in the brutal attack that occurred on their semi-rural property on Elizabeth Drive in Badgerys Creek,
Man killed in Badgerys Creek home
A man is dead and a woman was injured when they were attacked by up to three men who broke into their Badgerys Creek home on Friday. Nine News.
Mr Cini's partner, Lucy, called triple-0 at 4am to say that she and her husband had been the victim of a violent home invasion.
Her husband was unconscious and not breathing, she said.
Police and paramedics arrived at the single-storey brick home a short time later but were unable to revive Mr Cini, who was the director of his own trucking company, Keith Cini Pty Ltd.
The property was also being operated as a piggery, police said.
While Lucy called emergency services at 4am, police said it was unclear when the attack actually occurred.
She was bleeding from her head, and it was possible she had passed out, a NSW Police spokeswoman said.
She was taken to Liverpool Hospital with a head injury and a broken arm.
Detective Inspector Hans Rupp, from the Homicide Squad, said the investigation was in its early stages and police were still searching for a motive.
Earlier on Friday, police said they were investigating whether the couple were attacked in a robbery gone wrong.
"We're taking a statement from the woman in the hospital as we speak now," Detective Inspector Rupp said.
Man killed in Sydney home invasion
An early morning 000 call sparked a homicide investigation when police found the body of a man and his injured wife at their Badgerys Creek home in Sydney's west on Friday. Nine News.
"It was a brutal attack, and clearly the man was very badly assaulted and the woman was also assaulted but she's not in a serious condition."
He said it was unclear how the three men got to the property or fled the house, but detectives were examining CCTV from nearby service stations to try to identify the offenders.
He said the offenders smashed their way into the house before attacking the pair.
"I think [the man] was assaulted with some sort of club," Detective Inspector Rupp said.
Homicide Squad detectives have set up an extensive crime scene and are examining the house, which is located near the intersection with Lawson Road.
The road was initially closed but has been reopened.
The NSW Police spokeswoman was unable to confirm reports that baseball bats were among the weapons used in the attack.
Anyone with information has been urged to call Crime Stoppers on 1800 333 000 or visit the Crime Stoppers online reporting page.