The granddaughter of Hamas Prime Minister Ismail Haniyeh was transferred on Sunday to Schneider Medical Center in Petah Tikva for treatment, sources in the Gaza Strip confirmed. She returned to the Gaza Strip after her condition worsened.The sources said that the girl, Amal, was in serious condition after being diagnosed with acute infection in the digestive system.Amal is the daughter of Haniyeh’s oldest son, Abdel Salam, who confirmed on his Facebook account that his one-year-old daughter had been transferred to Israel.“Dear brothers, Amal has been transferred inside the Green line,” the father wrote. “I pray to Allah for her recovery.”He later posted another message saying that his daughter was expected back in hospital in the Gaza Strip after undergoing medical check-ups in Israel.Palestinians published on Facebook a photo of the Hamas leader during a visit to his granddaughter in Al-Nasr Hospital in the Gaza Strip just before she was taken to Israel.