"I did this to stop the peace process," Yigal Amir told a Tel Aviv court today. "We need to be cold-hearted." The 25-year-old Israeli law student said he shot and killed Rabin because the prime minister would "give our country to the Arabs." The court ordered Amir held for 15 days while police prepare charges of murder, the attempted murder of Rabin's bodyguard, and involvement in an illegal organization. TIME's Johanna McGeary says that there is no indication yet that Amir was part of a larger conspiracy: "He's one of eight kids, and one of his brothers has also been arrested on the suspicion that he might have helped Amir. But there's nothing other than that." When asked by the magistrate whether anyone else was involved in the shooting, Amir replied "I acted alone, and maybe with God."