Malaysian police said on Wednesday they would soon question former prime minister Najib Razak and his wife after finding nearly $275 million worth of jewelry, handbags, watches and other items at premises linked to the couple.

Authorities are investigating Najib as part of their probe into how billions of dollars went missing from state fund 1Malaysia Development Berhad (1MDB), which was founded by the former premier.

Amar Singh, head of the police commercial crime division, said the retail value of the items seized from six properties linked to Najib was between 900 million ringgit and 1.1 billion ringgit ($224 million-$273 million).

“This is the biggest seizure in the Malaysian history,” Singh told a news conference.

He said more than 150 police officers and external experts took nearly a month to value the seized items.

Jewelry accounted for the biggest portion of the seizure - 12,000 pieces of jewelry valued at between 660 million to 880 million ringgit, Singh said. The single most expensive item was a diamond necklace worth at least 6.4 million ringgit.

Authorities also found 116.7 million ringgit in cash, slightly higher than previously disclosed. Singh said 22 central bank officials using six cash-counting machines needed three days to count the money.

Luxury handbags and watches worth millions of dollars were also seized.

Singh said police planned to take statements from Najib and his wife, Rosmah Mansor, on the ownership of the seized items.

“We should be calling them soon,” he said. “We have to verify if they were gifts from people, and if so, who are the gifts from”.

Read more on Reuters.