Roman Polanski looks set to remain in custody until at least Monday, according to the Swiss Justice Ministry.The authorities say they need more time to complete the details of his house arrest. The 76-year-old director has been granted 3 million euro bail on condition he remain under house arrest at his luxury chalet in Gstaad and be fitted with an electronic tag. The Oscar-winning movie maker is fighting extradition to the US to face sentencing over a case of unlawful sex with a 13-year-old girl. Polanski fled the United States in 1978 before the court passed sentence. Bail conditions include, surrendering his identity and travel documents. Still, Interpol has issued a warning to its 188 member countries to take the director into custody if he tries to travel. Polanski has spent the past 31 years as a fugitive. He was arrested in Zurich in September as he arrived to receive a lifetime achievement award at a film festival.