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WASHINGTON – U.S. Capitol Police arrested a staffer in the office of Houston Democratic Rep. Sheila Jackson Lee who allegedly posted personal information about one or more senators involved in the hearings on Supreme Court nominee Brett Kavanaugh.

Jackson A. Cosko, 27, faced charges Wednesday of making public, or "doxing," restricted information, unauthorized access of a government computer, burglary, and other violations of federal law.

Jackson Lee's chief of staff, Glenn Rushing, told the Chronicle that Cosko was an intern who had worked in their Washington congressional office for just the past month. "He is no longer with us," Rushing added.

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Rushing said he could provide no other details, other than to say that others might have been involved. "It's an ongoing investigation and we're cooperating with law enforcement," he said.

Capitol Police released no more specifics. But some news outlets reported that Cosko posted the home phone numbers and addresses of at least four Republican senators, three of them members of the Judiciary Committee which voted along party lines last week to advance Kavanaugh's nomination.

According to Roll Call, a Capitol Hill newspaper, Majority Leader Mitch McConnell's home addresses in Kentucky and Washington D.C. were added to his public Wikipedia page. The paper also reported that "the personal home addresses, home phone numbers, cellphone numbers and email addresses of Sens. Lindsey Graham, R-S.C., Orrin G. Hatch and Mike Lee, both R-Utah, were added to the public Wikipedia pages from what appeared to be an IP address connected to the Capitol."

The information reportedly was added during the Kavanaugh hearings, and then sent to thousands of people through a Twitter account.

Cosko's LinkedIn profile identifies him as a "Democratic Political Professional & Cybersecurity Graduate Student" from the D.C. area. He lists a number of Senate and House positions dating back more than five years.

He also lists experience as a former Iowa field organizer for Generation Forward, a political action committee associated with former Baltimore Mayor and Maryland Gov. Martin O'Malley, a 2016 presidential candidate.

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According to Legistorm, an online service that tracks congressional staffers, Cosko has previously worked for Sens. Barbara Boxer of California and Maggie Hassan of New Hampshire.

McConnell announced Wednesday that the FBI had forwarded the results of its "supplemental background investigation" on Kavanaugh and that the full Senate is scheduled to take a preliminary vote on the nomination on Friday.

Jackson Lee, a member of the House Judiciary Committee, has publicly opposed Kavanaugh's nomination and sided with Dr. Christine Blasey Ford, who testified before the committee that Kavanaugh sexually assaulted her three decades ago at a teenage drinking party.