PRAGUE — Police in the Czech Republic have arrested a Russian hacker suspected of cyberattacks in the United States, officials said Wednesday.

Police said an international warrant for the man, who was not named, was issued by Interpol and that officers cooperated with the FBI on the case.

Hours after the arrest was made public, the professional networking service LinkedIn suggested that the arrest was tied to a 2012 breach of member data.

A spokesman for the Justice Department declined to confirm that or comment on a possible connection.

“Following the 2012 breach of LinkedIn member information, we have remained actively involved with the FBI's case to pursue those responsible,” the company said Wednesday. “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.”

In May, LinkedIn said that the 2012 breach resulted in more than 100 million of its users' passwords being compromised — vastly more than previously thought. The business social network said that it believes to be true a purported hacker's claim that 117 million user emails and passwords were stolen in the breach.

Police spokesman Jozef Bocan said the suspect was arrested in a Prague hotel. After the arrest the suspect collapsed, received treatment and was hospitalized, Bocan said.

Another police spokesman, David Schoen, said the arrest took place Oct. 5 and that police delayed releasing information about it for “tactical” reasons.

Police video from the arrest identified the man only as Yevgeniy N.

In a Wednesday statement, the FBI said the man was “suspected of conducting criminal activities targeting U.S. interests.”

Prague's Municipal Court will have to decide on his extradition to the United States, with Justice Minister Robert Pelikan having the final say. Russian officials, however, are demanding that the suspect be handed over to them.

Spokeswoman Marketa Puci said the court ruled Oct. 12 that the man will remain in detention until the extradition hearing. No date has been set.

U.S. authorities have two months to deliver to their Czech counterparts the documents necessary for the Czech authorities to decide on the request.