DUMA, West Bank — The severely burned father of a Palestinian toddler who was killed in an arson attack died of his wounds early Saturday, and thousands of Palestinians came to bury him in this West Bank village gripped by grief, anger and fear.

The man, Saad Dawabsheh, 32, died in the Soroka Medical Center in Beersheba eight days after his 18-month-old son, Ali, was killed in the fire that consumed the small family home.

Dr. Motti Klein, who runs the intensive care unit at the hospital, said in a statement that Mr. Dawabsheh had arrived in critical condition, with severe burns covering 80 percent of his body.

His badly burned wife, Riham, 27, and their other son, Ahmad, 4, remained in another Israeli hospital on Saturday with life-threatening injuries, though doctors said that Ahmad’s condition had improved somewhat and that he was now able to communicate with those around him.