Police arrested more than a dozen people in Melbourne's west this morning following reports of an alleged assault.
Emergency services were called to a home at Mambourin near Wyndham Vale this morning after reports a man had allegedly been assaulted.
When police arrived, the people inside the home allegedly refused to come out.
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Heavily armed tactical officers arrived at the scene, went through the property and arrested 13 people.
Police found a man in his 20s inside the home who was unresponsive.
He was taken to hospital in a stable condition.
9News understands the property hosted a party last night and it is often used for short-term accommodation after being rented out online.
One neighbour said the situation has become a nuisance.
"We don't know what kind of people come and stay there," he said.
Most of the people who were arrested by police were later allowed to leave.
Officers are investigating what happened.
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