First Lady Michelle Obama, who is headlining a fundraiser for Democratic Senate hopeful Edward J. Markey Wednesday, will also visit with victims of the Boston Marathon bombings she met last month, according to the White House.

The first lady met patients at Boston Children’s Hospital and Brigham and Women’s Hospital while she was in Massachusetts with the President on April 18, three days after the bombing.

The White House did not provide details of the locations she will visit on Wednesday.

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In addition to the Boston fundraiser, Obama will also attend two fundraisers for the Democratic National Committee in New York City late in the day Wednesday.

Senator Elizabeth Warren will also attend the Boston fundraising event, a Warren aide confirmed.

The first lady rarely attends campaign events for US Senate candidates, so her appearance on the campaign trail for Markey is a sign of particularly strong support from the White House. Her visit comes on the heels of news Tuesday that President Obama officially endorsed Markey. In a statement, the president called the Massachusetts congressman “a passionate and effective champion for middle class.”

During his campaign, Markey has worked to nationalize the race on issues like gun control, where his positions are similar to those of the President.

As the Boston Globe reported earlier this month, the fundraiser with the first lady will be at the Taj Boston hotel. While donors can give as little as $500, they can donate up to $37,600. The fundraiser is officially supporting a joint committee that benefits both the Markey campaign and the Democratic Senatorial Campaign Committee, the arm of the national Democratic party devoted to maintaining Democratic control of the Senate.

Markey is set to face Republican Gabriel E. Gomez, a private equity investor, on June 25.