Mueller Probe Cost Has Increased to More Than $25 Million

Special Counsel Robert Mueller departs after briefing the U.S. House Intelligence Committee on his investigation of potential collusion between Russia and the Trump campaign on Capitol Hill in Washington, on June 20, 2017. Aaron P. Bernstein/Reuters

The controversial probe into Russian interference in the 2016 election has cost taxpayers more than $25 million.

Special counsel Robert Mueller and those working for him spent more than $4.5 million in the period between April 1 and Sept. 30 alone, the counsel’s office said in a budget expenditure report (pdf) published on Dec. 14.