The US Department of Justice interviewed former hostages, survivors of the October 7 massacre, and relatives of victims to form a case against Hamas and its financial supporters, according to a Bloomberg report earlier this week, citing sources familiar with the matter.
According to Bloomberg, to identify the kidnappers and create a timeline of the events, some of the survivors traveled from Israel.
They reportedly shared videos and messages from the massacre with the FBI, who participated in the investigation.
Hamas's financial backing
An additional aspect of the investigation aims to unearth the financial networks backing Hamas, such as Iran and Qatar.
Bloomberg cited a source saying that the investigation seeks to ascertain whether US financial institutions were affected by such financing.
The examination reportedly includes prosecutors from the Washington and New York Attorneys' offices and the Department of Justice Counterterrorism Section.