ByMary Whitfill Roeloffs,

Forbes Staff.

The Trump administration is exploring possibly buying large warehouses originally designed for large shipping companies like Amazon to use as holding centers for immigrants swept up by ICE arrests, NBC News reported Friday citing two unnamed government sources.

Described by a Department of Homeland Security official as "mega detention centers," the warehouses would be retrofitted to serve as holding facilities and vastly increase the amount of people who could be detained at a time.

Warehouses designed for but never used by Amazon (the company has denied any involvement in this plan) are among the options being considered, the report said, suggesting facilities between 600,000 and millions of square feet are on the table.