Roman Polanski's family was inside the director's Alpine chalet Friday as Swiss authorities prepared his transfer to house arrest. An Associated Press reporter saw the two children peeking out of the window of Polanski's chalet in the luxury resort of Gstaad. His wife could not be seen through the window. Polanski was expected to be taken to his chalet on Friday afternoon, after posting $4.5 million in bail, according to Swiss authorities. Officials acted to protect Polanski from public attention Thursday by moving him from a Zurich area jail to an undisclosed location before the transfer. Polanski was taken from the jail in Winterthur for “security reasons and personal protection,” Justice Ministry spokesman Folco Galli said. He declined to say where the 76-year-old director was being held. “This doesn't change anything in principle,” Galli said. “He will still be transferred tomorrow.” A private security guard took up watch at the house Thursday night. Polanski won't be allowed to leave his house while Switzerland decides whether to extradite him to the US, where he has been convicted of having sex in 1977 with a 13-year-old girl. He will have to wear an electronic monitoring bracelet.