First Lady Michelle Obama will visit relatives of the victims of the Sikh temple shooting in Wisconsin on Thursday, a White House official said.
Police blame the August 5 shooting, which killed six people and wounded three, on Wade Michael Page, a 40-year-old former US Army specialist.
Page, who killed himself with a gunshot wound to the head, was associated with neo-Nazi groups and the authorities are treating the incident as a case of domestic terrorism.
Obama will visit the Milwaukee suburb of Oak Creek to "meet with immediate family of victims and immediate family of the seriously injured," a White House official told AFP Saturday.
US investigators are yet to establish a motive for the killings, but they are looking into Page's links with white supremacist hate groups.
President Barack Obama has condemned the "senseless violence," which came just days after a July 20 shooting at a packed midnight premiere of the latest Batman movie that left 12 people dead and dozens wounded.