A New York man who discussed an American re-enactment of the New Zealand mosque massacre with white supremacist friends on Facebook was charged Thursday with lying to F.B.I. agents, law enforcement officials said.

According to the criminal complaint, Thomas Alonzo Bolin, 22, was charged on Wednesday with lying to federal agents in an interview last week about whether he owned firearms, the Office of the United States Attorney for the Western District of New York said. He was already in custody on state charges filed Saturday.

The office said the F.B.I. had been investigating Mr. Bolin, who lives in the Rochester suburb of Greece, N.Y., for possible violations of federal civil rights and firearms laws.

It was not clear on Thursday whether Mr. Bolin had made any specific plans for violence. But in Facebook messages he had praised the March 15 mass killing of 50 people at two mosques in Christchurch, New Zealand, according to the criminal complaint. He also discussed his desire to commit acts of violence in the messages, which were intercepted by law enforcement officials.