A 43-year-old Everton man is being questioned by homicide squad detectives after a woman's death at a tourist park in Everton.
Emergency services were called to the Everton Caravan and Tourist Park, close to the town's centre, about 7.10pm on Monday night.
Victoria Police responded to reports "a woman had been fatally injured" at a Great Alpine Road address.
"Crews tried to revive the woman but were unsuccessful," a spokesman said.
"Police have taken a man into custody and he is currently assisting investigators with their enquiries."
Victoria Police said detectives believed both parties were known to each other.
The 40-year-old woman who tragically died was from Wangaratta.
While the 43-year-old is an Everton man, Everton Hotel publican Murray King said his understanding was the man was not a long-term resident of the area.
"Much like every caravan park, people come and go," he said.
The hotel was not open on Monday night but Mr King reached out to regular staff and locals, who were shocked by the incident.
"Everton is a very tight-knit community," he said.
"We're all very shocked at the situation for our lovely little town and we're quite concerned that this happened."
Any witnesses, anyone with CCTV/dash cam footage or anyone with information that could assist police is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au