NEW YORK: US prosecutors investigating Goldman Sachs Group Inc.’s role in raising almost $6 billion for Malaysia’s 1MDB investment fund are asking questions about money flowing through accounts linked to Tim Leissner, the lead banker behind the transactions, according to people familiar with the matter.

Officials from the Federal Bureau of Investigation and Justice Department have been interviewing bankers familiar with 1Malaysia Development Bhd. about Leissner’s network of relationships with politically connected Malaysians, said the people, who asked not to be named because the queries aren’t public.

In interviews as recent as last month, the people said, the U.S. officials asked about the association between Leissner, who left Goldman Sachs in February 2016, and Low Taek Jho, who the Justice Department said in July was at the center of a scheme that siphoned more than $3 billion dollars from 1MDB.

U.S. investigators are asking in particular whether money was sent from a Leissner-linked account to an entity controlled by someone tied to the Malaysian government, one of the people said.