On March 25, 2010, the Port Authority announced that it had assumed responsibility for the development of 5 World Trade Center, in addition to One World Trade Center, the National September 11 Memorial & Museum, the transportation hub, and other site infrastructure. Towers 2, 3, and 4 would continue to be developed by Silverstein Properties. On June 15, 2010, New York University had expressed interest in expanding to 5 World Trade Center as part of its NYU 2031 program. These plans were also eventually rejected.