AUSTRALIAN supermodel Miranda Kerr has handed over $US8.1 million ($A10.7 million) worth of jewellery from her Los Angeles deposit box to US government agents.

The Wall Street Journal reported on Monday the jewels included a 11.72 carat heart-shaped diamond pendant Valentine’s Day gift from former boyfriend and Malaysian financier Jho Low.

“From the start of the inquiry, Miranda Kerr co-operated fully and pledged to turn over the gifts of jewellery to the government,” Ms Kerr’s spokesman told the newspaper.

“Ms Kerr will continue to assist with the inquiry in any way she can.”

The jewels were identified in civil-forfeiture lawsuits filed by the US Justice Department pursuing assets allegedly bought with money misappropriated from Malaysian sovereign-wealth fund 1Malaysia Development Bhd.

The fund has denied any wrongdoing and Low has not been accused of a crime. The Justice Department is seeking more than $US1.7 billion worth of assets. Ms Kerr reportedly dated Low for about a year in 2014.

The 34-year-old Sydney-born model began dating Snapchat co-founder and billionaire Evan Spiegel in 2015 and the couple married in Los Angeles last month.

Hollywood star Leonardo DiCaprio was also unwittingly caught up in the investigation and agreed to turn over gifts identified in the lawsuit, including an Oscar won by Marlon Brando.