JERUSALEM (JTA) — Several Jewish Israeli youths have been arrested in connection with a West Bank arson attack that killed an 18-month-old Palestinian boy and his parents. The youths were arrested in recent days due to “concrete suspicions” of their involvement in the attacks, the Shin Bet security service and Israel Police said Thursday, Dec. 3, following the partial lifting of a gag order on the case. The youths have not been named, in keeping with the gag order. The security services had hinted in recent days that there had been a breakthrough in the case of the July 31 firebomb attack on the Dawabsheh family home in Duma. Along with the three deaths, the baby’s five-year-old brother, Ahmed, was seriously burned and remains hospitalized. The youths arrested are accused of being members of “a Jewish terrorist organization and of carrying out terrorist attacks,” the Shin Bet said in a statement.

Hussein Dawabsheh, the boys’ grandfather, told Ynet, “We are happy to learn that the security establishment arrested the murderers of my daughter, son-in-law and grandson after four months. … I can’t bring back my family, but I want those murderers to look in little Ahmed’s eyes, and see what they did to him, how they killed his family. “

Attorneys for some of the arrested suspects told Israeli media outlets they are being mistreated legally. One lawyer said his client has been held for eight days without being allowed to see his attorney or members of his family.