The top Republican in the US House of Representatives is expected to announce an investigation this week into Hillary Clinton's use of email when she led the State Department, ABC News reported on Sunday.
ABC's "This Week" said that top Republicans briefed the program about Speaker John Boehner's plan to investigate Clinton's use of her personal email address when she was secretary of state from 2009 to 2013.
However, the network did not state whether the probe would be separate from an ongoing House investigation and additional actions being considered by an oversight committee.
Also on Tuesday, Clinton's office released a detailed document about her email use and the steps she had taken to provide relevant official emails to the State Department.
Clinton's attorneys used key search terms, such as official government account addresses and countries relevant to ongoing congressional probes, to identify official emails, according to the document.
Clinton's use of a personal email address first surfaced as congressional panels investigated the 2012 attack on a US diplomatic facility in Benghazi, Libya.
Republican Representative Jason Chaffetz, who chairs an oversight committee on government reform, said last week that his panel would cooperate with Gowdy's and "continue looking into this matter."
Gowdy told "Fox News Sunday" that there are "huge gaps" in the Clinton email record provided to the committee.
"I just can't trust her lawyers to make the determination that the public is getting everything they're entitled to," Gowdy said.
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