The mother of Palestinian toddler Ali Saad Dawabsha, who was killed when suspected Jewish extremists firebombed his house, succumbed to her injuries on Sunday night, said the Israeli hospital where she was cared for and her family.

Several suspects have been arrested after the family's home in the West Bank village of Duma was firebombed on July 31, sparking anger among the Palestinian community. Riham Dawabsha's death comes after her 18-month-old Ali died on the day of the attack and his father Saad eight days later. Ali's four-year-old brother Ahmed is still in hospital.