A gunman killed multiple people at the Capital Gazette newsroom in Annapolis, Maryland, according to The Baltimore Sun.
At least five people are confirmed dead, according to authorities on the scene.
An unconfirmed number of people are injured, according to numerous reports. The suspect has been taken into custody, Anne Arundel County Sheriff Ron Bateman confirmed.
BREAKING: Anne Arundel County Sheriff Ron Bateman confirms to Fox News "multiple fatalities” following reports of s… https://t.co/DgUTp00ewm— Scott Gustin (@Scott Gustin)1530213662.0
The Bureau of Alcohol, Tobacco, Firearms and Explosives responded to the “shooting incident” at the Gazette, The Sun reported.
It's unclear how many people were inside the building when the killer stormed the newspaper offices.
Phil Davis, a courts and crime reporter at The Gazette, was inside the building during the attack. He sent out a series of tweets about the shooting.
A single shooter shot multiple people at my office, some of whom are dead.— Phil Davis (@Phil Davis)1530214952.0
Gunman shot through the glass door to the office and opened fire on multiple employees. Can't say much more and don… https://t.co/i1RmtpXmO9— Phil Davis (@Phil Davis)1530215156.0
Acting Police Chief William Krampf said during a news conference that police arrived within 60 seconds after receiving the first 911 call.
One official said the suspect was a male in his 20s and had no identification on him.
According to CBS News, the suspect is not cooperating with police.
Some of the injured have been transported to nearby hospitals.
This story is evolving and will be updated as information becomes available.