A Queensland family who lost a son and daughter-in-law on flight MH370 are today grieving the loss of further family members who were on board MH17 when it was shot down over Ukraine.

Irene and George Burrows of Biloela, seven hours north of Brisbane, have been faced with the unthinkable tragedy.

The couple lost their son Rodney and daughter-in-law Mary Burrows when MH370 disappeared in March.

Today, their step-granddaughter Maree Rizk and her husband Albert, both from Sunbury near Melbourne, were named as two of the 28 Australians on the plane shot down above Ukraine early this morning, the ABC reports.

"It has been a very trying day," Irene's son Greg told The Courier-Mail .

"This has just blown everyone clean out of the water."

Albert and Maree Rizk are believed to be among the 28 Australians killed in the crash

Mr Rizk, a real estate agent, and his wife were reportedly returning to Australia on the flight following a month-long holiday in Europe.

"Last night I was talking to his son, James, and I said when are Albert and Maree coming back?" Hume City Councillor Jack Ogilvie told AAP.

"He said they are on the flight and they'll be home tomorrow ... but they just didn't make it."

Mr Ogilvie said the Sunbury community was in shock and he described the couple as "absolutely fantastic people".

Rodney and Mary Burrows were on MH370 with friends Bob and Cathy Lawton when it disappeared shortly after departing Kuala Lumpur for Beijing on March 8.

Mary and Rodney Burrows, Brisbane The pair had recently moved before leaving for a holiday in Asia. They have been described as "soulmates" and the hard-working parents of two adult daughters and a son. (Supplied) (Supplied)

"Our family is trying to come to terms with this terrible tragedy," son Jayden Burrows said in a statement by the family in March.

"We dearly love and will miss our Mum and Dad.

"The love and compassion that they shared and their priority of putting their family first will help us get through this together.