A longtime staffer of the U.S. Senate Intelligence Committee was arrested on Thursday on charges of lying to FBI agents investigating the illegal disclosure of classified information, the U.S. attorney for the District of Columbia said.

James Wolfe, who worked for the committee as director of security for about 29 years, allegedly lied to FBI agents in December about his contacts with three reporters, U.S. Attorney Jessie Liu said in a statement.

As director of security, Wolfe, 58, was responsible for safeguarding all classified information in the committee's possession, the statement said.