Trump's new Alcatraz prison could cost $2 billion, Axios reports

U.S. President Donald Trump's plan to convert Alcatraz back into a maximum-security prison could cost roughly $2 billion, Axios reported on Friday citing administration sources.

"Estimates are still ongoing and there is no reportable final number," a White House spokesperson told Reuters.

Alcatraz was closed as a maximum-security prison in 1963 after 29 years of operation, because it was too expensive to continue operating. Trump previously said he would order the long-shuttered facility, now operated as a historic site in San Francisco Bay, to once again house violent criminals.