Deadly shooting at Maryland newspaper

One patient was taken to the University of Maryland Medical Center in Baltimore, Maryland, following the Annapolis shooting, according to Lisa Clough, the director of media relations for the hospital. 

No information about patient, including his or her condition, is available at this time.

Clough says she does not know if they are expecting any additional patients.

Two law enforcement officials tell CNN that there are multiple injuries as well as fatalities. 

A source tells CNN one person, believed to be the shooter, is in custody.

A crime and courts reporter at the Capital Gazette newspaper has tweeted about the shooting, and he said that a gunman "shot through the glass door to the office and opened fire on multiple employees."

"Can't say much more and don't want to declare anyone dead, but it's bad," he said.

He added: "There is nothing more terrifying than hearing multiple people get shot while you're under your desk and then hear the gunman reload."

A law enforcement source told CNN the shooting happened in the newsroom. 

Earlier, an officer on the scene would not confirm if the newspaper office building was involved, however, the address police gave matches the one listed on the Capital Gazette's website.

Maryland Gov. Larry Hogan just tweeted about a shooting at the Capital Gazette building in Annapolis. He warned people to stay away from the scene of the shooting.

Hogan said that he was "absolutely devastated to learn of this tragedy in Annapolis."

A law enforcement official tells CNN that one person is in custody, believed to be a shooter at the Gazette building. The source said there are multiple wounded. 

Anne Arundel police tweeted that they are continuing to search the building.

President Trump has been briefed on the shooting in Annapolis, deputy press secretary Lindsay Walters told reporters. 

The President was in Wisconsin today for meetings with supporters and the groundbreaking ceremony of a new Foxconn plant.