Executives at Amazon, including founder Jeff Bezos, may have misled or lied to Congress about the firm's business practices, top US lawmakers have said.
Amazon strongly denies the allegations.
"Amazon and its executives did not mislead the committee, and we have denied and sought to correct the record on the inaccurate media articles in question," a spokesperson said.
On Monday, five members of the US House Judiciary Committee wrote to Amazon boss Andy Jassy, who succeeded Mr Bezos in July, reports BBC.
They said "credible reporting" by Reuters and recent articles in other news outlets "directly contradicts the sworn testimony and representations of Amazon's top executives - including former CEO Jeffrey Bezos".