When FBI agents went to search former US President Donald Trump's home in Florida, it unleashed a political storm unlike anything in recent memory. 

the move raised many questions, amid criticism from the Republican Party.

So let's take a step back, and here are the highlights:

What are the reasons for searching Trump's home ?

In short, because the US Department of Justice suspects that the former president may have committed a crime.

The search warrant, which was released, shows that FBI agents collected evidence on August 8 as part of an investigation into whether Trump mishandled government records by moving them from the White House to his Florida home.

It should be noted here that US presidents must transfer all of their documents and emails to a government agency, called the National Archives.

Earlier this year, that agency said it had recovered 15 boxes of papers from Trump's home that he should have turned over when he left the White House. She said it contained classified information 

and asked the Justice Department to investigate.

To obtain a search warrant, prosecutors had to convince the judge that they had reason to believe a crime might have occurred. We also know that efforts to obtain a search warrant were signed by the attorney general.

What did the investigators find?

Twenty boxes of documents, according to an inventory that was disclosed along with the search warrant on Friday.

Did Trump respond?

Yes - the former president was outspoken about the FBI's search of his home, and has repeatedly denied any wrongdoing 

 "declassified" and placed in a "secure storage". He said he would have handed them over if the Justice Department had requested it.

His office issued a new statement on Friday, confirming that the documents had been declassified. "The authority to classify and declassify documents rests solely with the President of the United States," the statement said.

And while Trump says he declassified the documents before he left office - and his allies insist the president has the authority to do so - legal analysts point out that the matter is more complicated than that.

Tom Dupree, a lawyer who previously worked at the Department of Justice, told the BBC: "Presidents can declassify information but they have to follow procedures. They cannot simply say that these documents have been declassified. They have to follow a process [and it is not] clear what has been done." follow it here.

But Trump's office opposes that. "The idea that some working bureaucrats ... should agree to declassification is absurd," the statement said.

What are the possible crimes?

There are many laws that govern the handling of confidential information and presidential records, and they include both criminal and civil penalties.