A Democrat staffer was arrested in Washington DC after leaking private contact information regarding Republican Senators who support Brett Kavanaugh on the Judiciary Committee.

The staffer, Jackson Cosko, revealed addresses, phone numbers, and other information on Wikipedia while using a Congressional computer.

The Senators targeted were Mike Lee, Lindsey Graham, and Orrin Hatch.

According to Politico:

“A man accused of “doxing” several GOP senators was caught on Tuesday night inside the office of Sen. Maggie Hassan by a Hassan staffer, who then called the police on the man, according to a person familiar with the matter.

The U.S. Capitol Police on Wednesday arrested Jackson A. Cosko, 27, for posting addresses and private information of senators, according to the police department. A former Hassan (D-N.H.) staffer, Cosko made an unauthorized entry into her Capitol Hill office on Tuesday evening which led to his arrest, the person familiar with the matter said.

Hassan’s office declined to comment. Cosko most recently worked for Hassan as a “legislative correspondent/systems administrator,” according to Legistorm. Cosko left Hassan’s office in May. Cosko is due in U.S. District Court for the District of Columbia on Thursday. Cosko has been working as an intern in the office of Democratic Rep. Sheila Jackson Lee of Texas and has been fired, according to her chief of staff, Glenn Rushing.

Cosko has been charged with making public restricted personal information, witness tampering, threats in interstate communications, unauthorized access of a government computer, identity theft, second-degree burglary and unlawful entry. A bot that tracks edits to Wikipedia pages found that the changes were made from a computer on Capitol Hill on the House side.”