The FBI arrested and charged an alleged Las Vegas neo-Nazi with plotting to bomb a synagogue and gay club in the city on Thursday.

Conor Climo, 23, who worked as a security guard, allegedly was found to be in possession of bomb-making materials and was "communicating with individuals who identified with a white supremacist extremist organization using the National Socialist Movement to promote their ideology," according to the FBI.

The Las Vegas Joint Terrorism Task Force began investigating Climo in April, according to the criminal complaint, after it learned he was communicating with Atomwaffen Division, a white supremacist neo-Nazi group.

Read more: ABC News