The account of Twitter's CEO and co-founder was hacked for a short while before being secured.
Public tweets and retweets including racial slurs and swear words were sent from Jack Dorsey's account on Friday night.
They appeared in the feed of his 4 million followers before Twitter eventually secured the account.
The tweets and retweets were deleted less than an hour after the breach.
In a statement, Twitter said the phone number connected with Dorsey's account was compromised because of a security oversight by the mobile provider.
At least 14 killed in explosion at weapons depot in Syria
US hits five Iranian oil tankers after attack on Navy ships
UK flights resume after major air traffic outage but airports warn of more disruption
Serbia's President Vucic dissolves parliament, calls snap elections
With large crowds attending, Norway lays King Harald to rest
Jordan intercepts 18 Iranian ballistic missiles
Air traffic control issue disrupts flights at major UK airports
At least 73 injured after Houthi rebels attack Saudi civilian and energy facilities
