The judge said the evidence in the affidavit was reliable.
The judge's concerns were explained in a Monday court order.
There are redactions that the government wants to make before a final decision is made.
The FBI's affidavit seeking a search warrant for Mar-a-Lago was found to be reliable by a federal judge, but he hasn't decided how much of it will be made public.
Highly sensitive information about witnesses, including witnesses interviewed by the government, is contained in the affidavit that was used to obtain a search warrant for Donald Trump's Florida home.
As conservative organizations and journalism outlets have submitted legal challenges arguing that the affidavit is in the public interest and should be made public, Reinhart said in a ruling last week that he is considering releasing portions of the document, but must consider the integrity of the DOJ's ongoing criminal investigation before determining what
"After carefully reviewing the Affidavit before signing the Warrant, I am satisfied that the facts sworn by the affiant are reliable," he wrote in his 13-page order.
There is intense public and historical interest in an unprecedented search of a former President's residence, and unsealing the document would promote public understanding.
The compelling government interests of protecting the integrity of the investigation and search methods used by the government, as well as shielding witnesses from harassment and intimidation, are factors that weigh in favor of seal the document.
"After considering all the relevant factors, I found that the Government has met its burden of showing good cause and a compelling interest that outweighs any public interest in unsealing the full contents of the Affidavit," she wrote.
The Department of Justice was told to propose redactions that would allow portions of the affidavit to be published while protecting the ongoing investigation.
The final decision will be made after the DOJ submits its proposal.
Business Insider has an article on it.