(CNN) - An email given to congressional investigators shows that members of the Trump campaign were offered a website address and decryption key that would give them access to hacked Wikileaks documents.
Then-candidate Donald Trump, his son Donald Trump Jr. and others in the Trump organization received the email on Sept. 4, 2016. It's not clear whether the email was a real effort to give the hacked documents to the Trump campaign.
It came from someone who listed his name as Mike Erickson, and investigators aren't sure who the sender is.
CNN was unable to make contact with the individual.
Trump Jr. told investigators he had no recollection of the email, but it was described to CNN by multiple sources and its existence was verified by Trump Jr.'s attorney.
Congressional investigators are trying to determine whether the individual who sent the September email is legitimate.
They also want to know whether it shows that there were additional efforts by Wikileaks to connect with Trump's son and others on the Trump campaign.
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