Pecker is a key witness in the case against the former US president, who is accused of falsifying business records to cover up hush-money payment
Twitter said that the hackers were able to gain control of a small number of accounts and send tweets from them.
Accounts of celebrities and political figures including Joe Biden, Kim Kardashian, Barack Obama and Elon Musk were hacked during the cyber attack on Wednesday.
The FBI's San Francisco division is leading an inquiry into the Twitter hacking, it said in a statement on Thursday, as more Washington lawmakers called for an accounting of how it happened.
The high-profile accounts that were hacked also included rapper Kanye West, Amazon.com Inc founder Jeff Bezos, investor Warren Buffett, Microsoft Corp co-founder Bill Gates, and the corporate accounts for Uber Technologies Inc and Apple Inc.
Pecker is a key witness in the case against the former US president, who is accused of falsifying business records to cover up hush-money payment
The oil and gas conglomerate and Fifa, the world governing body, sign major sponsorship agreement
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