The parents of New Zealand triplets killed in a Qatar mall blaze in May are undergoing IVF treatment to have more children.
Two-year-olds Lillie, Jackson and Willsher Weekes were among 19 who died in the Villaggio Mall blaze on May 28.
Father Martin Weekes said in a TV interview that he and his wife Jane had been undergoing further IVF treatment in San Francisco.
"The decision for us to have another family has come after some very careful thought from Jane and I," he told TV One in New Zealand.
He and his wife also released a joint statement with the parents of the other children killed, calling on the Qatari government to get the trial underway.
The statement, cited in media in New Zealand, read: "It has been five long months since our children and many other loved ones died in a needless fire at Villagio. An avoidable tragedy that shouldn't have happened. And a response to the disaster that has made it worse.
"Every day we wait to get answers. And every day our pain is greater. We have followed the Qatari judicial system. At every hearing, we as families are in attendance.
"Yet, after three initial hearings a number of defendants have still to show us as victims, and the State of Qatar as the prosecutors, the decency to attend court and face judgment.
"As the victims we have shown more respect to the legal system than many of the defendants. It is also shocking to us that the Qatari defendants are the ones who have shown the most disrespect to both our children and the court."
The statement added: "This is made worse by one defendant, who we once trusted with the lives of our children and some once considered a friend, is still to appear at court. Does she not have any humanity?
"This is unacceptable. It is hurtful to us. It is making our grief and pain worse. It is making us question the legitimacy of the system that we have been asked to depend on to get answers."
The families said they cannot understand how one defendant has not been found and made to attend court.
"If we can't get answers from the courts we will continue to fight every day to get the answers we deserve, and the answers you and the world need to know so our children did not die in vain."
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