Malaysian authorities have made the first arrest in a renewed probe into the multibillion dollar scandal at state fund 1MDB, remanding a former aide of ousted prime minister Najib Razak to assist in investigations, Bernama reported on Monday. Malaysia’s costs of servicing 1MDB debt may reach as much as RM34.6bil (US$8.6bil) from 2019 to 2023, as the government will probably fully account for it, according to Maybank Kim Eng Securities. Full crystallisation of 1MDB’s debt has become highly likely, analysts Winson Phoon and Se Tho Mun Yi wrote in a report quoted by The Star Online on Monday. In his first interview after he dramatically lost the election in May, former prime minister Najib Razak protested his innocence and claimed that the board of the troubled 1MDB government fund had kept the multi-billion dollar embezzlement of the money from him.