The documents say that authorities "have reason to believe that" within the accounts there is evidence related to a violation of "sexual exploitation of children" and "distribution and possession of child pornography."
The U.S. attorney's office for Maryland, the FBI, and state and city police declined to comment.
"It would be inappropriate at this point to discuss the criminal investigation or do anything that could jeopardize the case down the road," said Greg Shipley, a state police spokesman.
"They've got it wide open to see what happened."
Authorities must have probable cause to obtain the search warrants based on the sexual exploitation and child pornography statutes.
"It's ordinary practice for law enforcement to get search warrants on everybody and anybody who's related to it to see if there's other evidence of other crimes," said Andrew Alperstein, a Baltimore defense attorney who is not involved in the case. But, he said, "a tip is not enough for a judge to issue a search warrant — there has to be reliability to it and probable cause that a crime occurred."
"This is a very high-profile case, and I'm sure law enforcement is using every tool available to them," Alperstein said.
"Her being nude will tie back to that eventually," Copus said.
But for now, he said, investigators are casting a "wide net."