Malaysian police filed fresh criminal charges and issued arrest warrants for fugitive financier Low Taek Jho and four others wanted in connection with a multibillion-dollar scandal at state fund 1MDB, officials said on Wednesday.

Low, popularly known as Jho Low, has been identified by Malaysian and U.S. investigators as a central figure in the alleged theft of about $4.5 billion from 1Malaysia Development Berhad (1MDB). Low, whose whereabouts is not known, has denied any wrongdoing through a spokesman.

Last month, U.S. prosecutors charged Low and two former Goldman Sachs bankers with conspiracy to launder 1MDB money and conspiracy to violate the Foreign Corrupt Practices Act.