WASHINGTON — A congressional committee asked the Department of Justice on Wednesday to prosecute a former tax official who’s alleged to have improperly targeted conservative political organizations.

On a party-line vote, the House Ways and Means Committee asked the Justice Department to review evidence uncovered by lawmakers to determine whether Lois Lerner, the former head of the exempt organizations division of the Internal Revenue Service, violated criminal statutes.

The committee’s Republican majority alleged that Lerner had influenced lower-level IRS officials to deny requests from conservative groups for tax-exempt status. The committee also charged that Lerner had impeded official probes with misleading statements to the Treasury Inspector General for Tax Administration and that she may have disclosed confidential taxpayer information by using her personal email to conduct official business.

“Almost a year ago we learned that the IRS subjected certain groups to extra scrutiny because of their political beliefs. At the time, Lois Lerner shamefully attempted to blame the mistreatment on low-level employees in Cincinnati,” said Chairman Dave Camp, R-Mich. “The investigation to date has demonstrated that the targeting did not happen until IRS headquarters in D.C. intervened.”

The conservative group Tea Party Patriots applauded Camp’s vote.

“Lois Lerner owes it to the American people to tell the truth about what she and the IRS did to strip citizens of their First Amendment rights,” said Jenny Beth Martin, a co-founder of the group.

William W. Taylor III, Lerner’s attorney, fired back quickly after Wednesday’s vote.

“Ms. Lerner has done nothing wrong. She did not violate any law or regulation. She did not mislead Congress,” Taylor said in a statement to McClatchy. “She did not interfere with the rights of any organization to a tax exemption. Those are the facts.”

Taylor also criticized Camp.

“We have not heard from the House Ways and Means Committee. Nor has the committee previously issued a report of its findings,” he said. “The committee’s referral affects nothing. The Department of Justice is already investigating the IRS. This is just another attempt by Republicans to vilify Ms. Lerner for political gain.”

Lerner was at the center of controversy last year when she revealed, in an answer to a planted question at a conference, that the IRS had engaged in inappropriate scrutiny of applications for tax-exempt status by conservative groups, particularly those with “Tea Party” in their names.