Anti-Zionist activists, some chained by the neck to a ladder, protested at Defence Minister Richard Marles' electorate office .
Demonstrators entered the building on Brougham St in Geelong, about an hour from Melbourne, about 10am on Wednesday.
Victoria Police said five people were arrested and released "pending summons in relation to trespassing."
"They include a 24-year-old Coburg man, a 25-year-old Thornbury man, a 21-year-old Brunswick woman, a 31-year-old Northern Territory woman and a 37-year-old Northern Territory woman," a Victoria Police spokesperson said.
"No one was injured."
Photos shared on social media showed demonstrators holding signs, including ones that read "Stop the genocide" and "Disarm Israel". Several had also used bike locks to chain themselves by their necks in the reception area.
In a statement released ahead of the protest, organisers, who said anti-Zionist Jewish activists led the protesters, called on Marles and the federal government to "withdraw diplomatic, economic and military support for Israel’s decades-long occupation of Palestine".
It comes amid the war between Hamas and Israel that started after the Palestinian militant group launched a.
Since then, Israel has pounded Gaza, which has been living under blockade by Israel and Egypt since 2007. There have also been reports of .
The protest started at about 10am on Wednesday at Defence Minister Richard Marles' electorate office in Geelong. Source: Supplied / Matt Hrkac
Hamas is , gaining power in the Gaza Strip since winning legislative elections there in 2006.
Its stated aim is to establish a Palestinian state while refusing to recognise Israel’s right to exist.
Some protesters chained themselves by their necks. Source: Supplied / Matt Hrkac
In a statement, Huttner-Koros said, "We want to show Jewish people in the diaspora that we can speak up.
"Jews and Palestinians can and do live together. I see it as my ancestral duty to fight for justice, peace and liberation for all.”
The protest lasted for nearly five hours. Source: Supplied / Matt Hrkac
"The abuse and destruction of property or goods is not acceptable," Marles said.
Posting on X, formerly known as Twitter, Matt Hrkac, a photographer and filmmaker at the scene, wrote the protest lasted for nearly five hours and ended when police "completely cleared the building".