A man has been assaulted and stabbed by up to 10 men at an Emu Heights home.
The 30-year-old victim was confronted by the group at the Palomino Road property abount 3pm yesterday (Thursday), police said in a statement.
"Initial inquiries indicate the men entered the house and dragged him outside where he was assaulted and stabbed twice," the statement said.
"The men then fled in waiting vehicles."
The victim was treated by paramdeics at the scene before being transported to Westmead Hospital, where he remains in a serious condition.
Anyone with information about the attack should contact Penrith police or Crime Stoppers on 1800 333 000.