Czech police have arrested a 30-year-old Russian man, Yevgeniy N., wanted in connection with criminal cyber attacks on US targets, including LinkedIn.
"This arrest, pursuant to an INTERPOL Red Notice, highlights the collaboration that exists between US law enforcement and our international partners," the FBI said in a statement. "Due to the ongoing investigation, no additional details can be provided at this time."
A court must now decide whether to extradite the suspect to the US—a move Russia is prepared to fight.
"We insist that the detainee is handed over to Russia," a spokesman for the country's embassy in Prague told local news agency TASS.
Four years ago, hackers gained access to more than 6 million of the enterprise social network's 161 million users. It made headlines again this year, however, when passwords stolen in that breach appeared online in May. Celeb social media accounts were subsequently hacked, as were those belonging to Mark Zuckerberg.
The hacker claiming responsibility (who goes by the name "Peace") told Motherboard earlier this year that there are 167 million-plus accounts in the database—about 117 million of which include emails and encrypted passwords. Peace was reportedly selling the stolen account data on the dark Web for five bitcoin (about $3,143).
"Following the 2012 breach of LinkedIn member information, we have remained actively involved with the FBI's case to pursue those responsible," a LinkedIn spokeswoman said today. "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."
Yevgeniy N. does not appear to be linked to recent political hacks in the US, according to Reuters.