The Lod District Court in central Israel convicted the main defendant in the Duma arson case of three counts of murder.
The 2015 arson, in which assailants firebombed the Dawabshe family's home in the West Bank village of Duma while they were sleeping, killing 18-month-old Ali Dawabshe, his mother Riham and his father Saad, shocked the nation, earning condemnations from across the political spectrum.
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The only survivor from the attack was then-4-year-old Ahmed Dawabshe. He was seriously wounded and hospitalized for close to a year after the attack.
At the time, Prime Minister Benjamin Netanyahu vowed that the perpetrators would be prosecuted to the full extent of the law.
On Monday, the court found Amiram Ben Uliel guilty of three counts of murder, two counts of attempted murder and one count of arson.
Ben Uliel was acquitted of the charges of membership in a terrorist organization.
During the trial, the defense had argued that the confessions obtained from the suspects in the case were done so under duress and were therefore inadmissible.
While the Central District Court had originally granted the defense's motion, the Lod court ruled Monday that the specific details included in the confessions indicated they were not false and could, therefore, be entered into evidence.
Attorney Yitzhak Bam, for the defendant, said, "After the court accepted the confession and reenactment made following my client's torture, the conviction was simply a matter of judicial acrobatics."
He said he would appeal the conviction before the Supreme Court.
Ben Uliel's sentencing hearing has been set for June 9.