Czech police on Wednesday arrested a Russian man suspected of cyberattacks against the United States, officials said.
An international warrant was issued by Interpol for the man, who was not named, with the help of the FBI, authorities said.
The U.S. has accused Russia of coordinating the theft and disclosure of emails from the Democratic National Committee and other institutions and individuals in the U.S. to influence the outcome of the election. Russia has vigorously denied that.
A U.S. official told Reuters the man was sought in an "older" hacking case and not for recent political hacks in the United States.
LinkedIn Corp. said he is also linked to a 2012 security breach at the social networking firm.
"We are thankful for the hard work and dedication of the FBI in its efforts to locate and capture the parties believed to be responsible for this criminal activity," LinkedIn said in a statement Wednesday.
Czech police spokesman Jozef Bocan told The Associated Press that the man was arrested in a Prague hotel, and that after the arrest he collapsed and was provided first aid and then taken to the hospital.
Another police spokesman, David Schoen, said the arrest took place on Oct. 5 and that police delayed releasing information about it for "tactical" reasons.
Police video from the arrest, obtained by the AP, identified the man only as Yevgeniy N.
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Prague's Municipal Court will now have to decide on his extradition to the United States, with Justice Minister Robert Pelikan having the final say.
A Russian foreign ministry official, Konstantin Dolgov, told Russian media that his government "will be insisting that he is not extradited to the U.S."
In a statement, the Russian embassy in Prague added that it "is taking every effort to protect the interests of the Russian citizen. We're working with his lawyer. Russia does not recognize the practice of extraterritorial jurisdiction that the United States is imposing throughout the world."
Czech court spokeswoman Marketa Puci said they ruled on Oct. 12 that the man will remain in detention until the extradition hearing. No date was set.