The United States Senate Intelligence Committee has summoned WikiLeaks editor and founder Julian Assange to testify on alleged Russian interference in the 2016 election, WikiLeaks said Wednesday in a tweet showing the letter, dated Aug. 1,  that was delivered to Assange's residence at the Ecuadorean embassy in London. 

The letter's author and committee chairman Richard Burr said he was requesting Assange make himself available to testify at an agreed upon time and location, to which WikiLeaks’ legal team responded that they “are considering the offer but testimony must conform to a high ethical standard,” RT reported. 

Assange fled to the Ecuadorian embassy in London in 2012, seeking asylum from possible extradition to the U.S., where he faced indictment under the Espionage Act for publishing leaked government documents.