Memorial service for families of MH370 victims at St John's Cathedral. Picture: Jamie Hanson

Relatives and friends of the Australians on board the Malaysia Airlines’ flight, including Bob and Cathy Lawton, Rod and Mary Burrows and Paul Weeks, gathered at St John’s Cathedral in Brisbane to mark the third anniversary of the tragedy.

Federal Transport Minister Darren Chester, Australian Transport Safety Bureau Chief Commissioner Greg Hood and former Deputy Prime Minister Warren Truss joined the families, in a show of respect and hope the mystery will one day be solved.

Karla McMaster with husband Brendan holding a photograph of her late parents Rod and Mary Burrows at the MH370 memorial service in Brisbane. Picture: Jamie HansonSource:News Corp Australia

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Mr Chester delivered the news a memorial would be established in Perth as soon as possible, to honour everyone on board the Boeing 777.

He acknowledged the “sadness, frustration and disappointment” shared by families that the plane’s fate remained unknown.

“It’s a hollow feeling for the families today but it’s important we gather and pay our respects,” Minister Chester said.

“We’re still hopeful there may be a breakthrough in weeks or months to come that leads us to the location of MH370.”

He said work continued at the ATSB in terms of assessment of satellite imagery, reviewing some of the sonar work that was done in the Southern Indian Ocean and drift modelling as more debris was found.

“There’s been pieces of debris located over the past couple of years, some far more significant than others and they’ve given investigators more information, but in terms of credible new evidence leading to a location of MH370 we don’t have that yet,” said Mr Chester.

Amanda Lawton and Jeanette Maguire remember loved ones at the MH370 memorial service in Brisbane. Picture: Jamie HansonSource:News Corp Australia

Karla McMaster, whose parents Rod and Mary Burrows were travelling with the Lawtons, said it was “hard not having answers”.

“We’re hopeful the search is continued at a later date and that we can get answers and find out where our parents are and all the other passengers, and make sure that everyone who’s going to be flying is safe again,” said Ms McMaster.

“All the officials that we speak to are so invested in this and I really feel that they want to find it as well and it’s not just a job for them.”

Amanda Lawton said the memorial announcement came as a surprise, but was a welcome development.

Her aunt Jeanette Maguire, Cathy Lawton’s sister, said they were very grateful for all that the Federal Government had done.

“We’re so lucky to live in Australia and to be kept informed about everything that’s going on,” said Ms Maguire.

“I don’t think those families in Malaysia and China are so fortunate.”

Former Deputy Prime Minister Warren Truss at the MH370 memorial service. Picture: Jamie HansonSource:News Corp Australia

Former Deputy Prime Minister Warren Truss who oversaw the start of the complex underwater search denied they rushed into the operation — and should have waited until more evidence was available.

He said the debris discoveries provided less specific information than the Inmarsat satellite data, on which the 120,000 square kilometre “high probability” zone was based.

“We had the best experts in their fields working on the search, and it is deeply disappointing to everyone the aircraft hasn’t been found,” said Mr Truss.

“It was not the result of a lack of expertise or commitment to the cause.”