The city is planning to move unidentified remains of September 11th victims to the World Trade Center site on Saturday.
However, the decision is not sitting well with some victims' families who were notified about the move in an e-mail over the weekend.
The message said the remains will be placed in a special repository within the National September 11th Memorial & Museum that will not be accessible to the general public.
While some relatives find the site a fitting resting place, others take exception to having the remains housed inside the museum building and what they call a last-minute announcement by City Hall.
Critics also say the city should have given families more than a week's notice.
The city's e-mail told families that they could start visiting a private Reflection Room at the repository on May 15.
The museum is set to open to the public on May 21.
According to the medical examiners office, over 1,100 victims of 9/11 have not been identified.