Weeks, who was based in the West Australian city of Perth, was one of 239 people on board the Boeing 777 Kuala Lumpur-Beijing flight when it disappeared on March 8, 2014.

Next-of-kin had started to file lawsuits over the jet's disappearance as a two-year deadline approached last week, with some hopeful the court scrutiny could shed light on what happened to the ill-fated flight.

Under international agreements, families have up to two years to sue over air accidents. Weeks' wife, mother, brother and sister were separately suing the flag carrier in the Supreme Court of Western Australia, according to Perth's media, citing five writs lodged on March 4.

They were seeking compensation for "personal injury, loss and damage" suffered as a result of "sudden shock" and "mental harm" after the disappearance, the daily said.

"The cause of the plaintiff's pain, injury, loss and damage was negligence of the defendant," the newspaper cited the writs as saying. A fifth writ was filed on behalf of Weeks' two children, the report added, without disclosing the amount of damages sought.

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