Riza Aziz, co-founder of Red Granite Productions was charged with five counts of money laundering last year
She is notorious for making overseas shopping trips and owning vast collections of handbags and jewellery
After losing power last year, the former prime minister was arrested and hit with dozens of charges related to 1MDB
Luxury mansion in Los Angeles allegedly bought by Malaysian financier Low Taek Jho
The allegations played a large part in prompting voters to oust Najib's corruption-plagued coalition
Malaysia's new government is probing allegations that billions of dollars were looted from state fund 1MDB
Najib denies any wrongdoing in relation to 1MDB.
Najib is expected to be charged in court on Wednesday after being remanded for one night, sources say
Sensational saga transfixed Malaysia for years until authoritarian former regime used its leverage to bury it
Najib is accused of overseeing plunder of state fund 1MDB