The driver who plowed a truck into a group of soldiers in Jerusalem, killing four people and injuring at least 10, may have been an Islamic Statesympathizer, according to Israeli Prime Minister Benjamin Netanyahu, CNN reports.

Israeli police shot and killed the attack suspect, whom they identified as 28-year-old Fadi Qunbar. Police have also arrested nine other suspects, including five of Qunbar's family members.

Speaking from the scene of the attack, on a promenade overlooking the walled Old City of Jerusalem, Netanyahu said authorities have identified the terrorist and "all signs show he is a supporter of the Islamic State."

"We know there is a sequence of terror attacks and it's quite possible that there is a connection between them, from France, Berlin and now Jerusalem," Netanyahu said.

Israel will now consider using administrative detention against suspected ISIS sympathizers and supporters, according to an official familiar with the decision. Earlier, Israel Police spokesman Micky Rosenfeld told CNN "there are no potential active ISIS cells here in Israel."

Netanyahu said police had sealed off Qunbar's predominately Arab neighborhood in East Jerusalem while they investigate.