THE EASE with which the four protesters gained access to the rooftop of Prime Minister Tony Abbott’s Manly electorate offices has left security officials red-faced.

The security breach by the two men and two women, who managed to occupy the rooftop of the PM’s Manly offices from 9am until 11am, is now the focus of discussions between state and federal police.

media_camera Protesters on Tony Abbott's rooftop share a selfie with the Manly Daily. Picture: supplied

The protesters, who posted a smiling selfie from the top of the building, are believed to have used a ladder to climb on to a neighbouring building to access the roof of Mr Abbott’s office.

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They then unfurled a banner with the words “Hunger for Justice” from the parapet of the building facing the streetfront.

Police escorted them down about 11am.

media_camera Police outside Tony Abbott's Manly electoral office, where four people accessed the rooftop to stage a protest. Picture: Braden Fastier

One of the protesters, Claire Parfitt, told The Manly Daily the quartet would not leave until a group of refugees on hunger strike were released from detention.

“This protest is to show solidarity with 15 refugees on hunger strike in Darwin including one man, Martin, who is very close to death,” Ms Parfitt said.

“We wanted to come to the office of the highest-ranking public official here in Australia.

We need to let people know the situation is absolutely horrible.

“We won’t come down until people are released from detention.”

media_camera Kimberley Maxfield shared this photo of the protest on the Manly Daily's Facebook page, saying "I support them". Picture: Supplied media_camera Under siege: Prime Minister Tony Abbott today during his address to the National Press Club in Canberra. Picture: Gary Ramage

She said the protesters were aligned with the Australia-wide fasting protest Hunger For Justice and are called themselves the Cross Water Collective.

Ms Parfitt said people across Australia had pledged to fast with Hunger For Justice.

“In the last five days, people across Australia have pledged almost 5000 hours of hunger striking in solidarity with refugees in Australia’s concentration camps,” Ms Parfitt said.

“It is a clear call to end mandatory detention now.”

media_camera Protestors give spectators a wave from the roof of PM Tony Abbott's Manly electoral office. Picture: Braden Fastier

Northern Beaches duty officer Insp Graeme Pickering said Ms Parfitt and Central Ave and Sydney Rd were closed to pedestrian and traffic during the stand-off between the protesters and the police.

At 11.15am the four relinquished their precarious positions and allowed themselves to be taken into police custody.

media_camera The protesters were removed by security, which interrupted the match between Andy Murray and Novak Djokovic. Picture: Splash News media_camera A similar protest interrupted play at the Australian Open Men's Final on Sunday night. Picture: Splash News

They were taken to Dee Why police station for questioning and later charged with trespassing.

Insp Pickering said questions of how protesters could gain access to the building housing the electoral office of the prime minister would be the subject of discussions between NSW Police and the Australian Federal Police.

He said the negotiations between police and the protesters had been amicable and the main concern of the police was for the safety of all involved.

Mr Abbott's electorate office