US Attorney General Jeff Sessions has been fired by President Donald Trump.
Mr Trump announced in a tweet that he would be replaced by his chief of staff.
The president has repeatedly criticised Mr Sessions, a former Republican senator who was among the first to support Mr Trump’s presidential candidacy.
“We thank Attorney General Jeff Sessions for his service, and wish him well!” Mr Trump wrote on Wednesday.
In a letter, Mr Sessions said he was resigning at the president’s request.
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Trump fires US Attorney General Jeff Sessions