He now faces a Czech extradition hearing, according to a statement issued by the U.S. Department of Justice.
However, the Russian Embassy in Prague told that Moscow will be seeking his return to Russia.
It said the arrest proves the U.S. is hunting for Russian citizens across the world.
He could face more than 30 years in prison and over $1m in fines, prosecutors said.
LinkedIn has suggested that Nikulins arrest was tied to a 2012 breach of member information.
Abraham Simmons, a spokesman for the U.S.
Attorneys Office, declined to comment on whether the charges against Nikulin relate to that breach.
Russia has denied that.
U.S. law enforcement officials said the new arrest is not related to those cyberattacks.
source: www.techworm.net
