A woman has died and a man is under police guard at a Northern Territory hospital following an alleged homicide.
Police found the woman at a home in the Darwin suburb of Leanyer about 5.30pm on Thursday.
A crime scene was declared and a man understood to be known to the woman was arrested about 2am on Friday at a home in Rosebery.
"At this stage detectives are treating this incident as a homicide, Detective Senior Sergeant Paul Morrissey said.
"The man suffered injuries and is currently under police guard at Royal Darwin Hospital."
Police will hold a media conference at 12.30pm on Friday.