A preliminary report on the missing Malaysia Airlines (MAS) FLIGHT MH370 will be released tomorrow, according to Acting Transport Minister Datuk Seri Hishammuddin Tun Hussein.

Hishammuddin said that after the report is released, he will fly to Australia to discuss the next phase of the search efforts involving the aircraft.

"I think to be fair to Australia and the countries involved in the search efforts for the missing plane, they did not reveal the costs involved for the assignment," he said during a press conference after officiating the opening of the Express Rail Link (ERL) at Kuala Lumpur International Airport II (KLIA2), on Wednesday.

He said, cooperation between those involved in the mission is key in order to achieve positive results especially in deep sea missions such as this.

"We will hold a press conference on MH370 tomorrow, and all the details of the initial report we will be revealed tomorrow," said Hishammuddin.