At least five people were killed Thursday when a gunman opened fire inside the offices of the Capital Gazette, a newspaper based in Annapolis, a historic city an hour east of Washington.
Police described the suspect -- who was being questioned in custody -- as a white adult male who was armed with a rifle or a shotgun and appeared to have acted alone. A reporter for the daily, Phil Davis, tweeted a chilling account of how the "gunman shot through the glass door to the office and opened fire on multiple employees."
"There is nothing more terrifying than hearing multiple people get shot while you're under your desk and then hear the gunman reload," Davis said. There were five known fatalities, the acting police chief of Anne Arundel County, Bill Krampf, told a news conference in Maryland's capital.
Lieutenant Ryan Frashure, a police spokesman, said three other people had been injured. Anne Arundel county executive Steve Schuh added on CNN that the suspect "has not been particularly cooperative," and that police had not been able to confirm his name.
Krampf said police had disposed of a suspected explosive device and that the four-story office building was now secure. He said 170 people had been safely escorted out of the building.
Capital Gazette editor Jimmy DeButts tweeted that he was "devastated & heartbroken. Numb." While it was not yet clear if journalists had been deliberately targeted, the shooting revived memories of a 2015 incident in Roanoke, Virginia in which two journalists were shot dead during a live broadcast on local television.
"Every shooting like this is horrific but one that occurs in a place of journalism is particularly disturbing and brings back the flood of memories of that tragic day for me," said Andy Parker, whose daughter Alison was one of the Roanoke victims.
President Donald Trump tweeted a message of support.
"My thoughts and prayers are with the victims and their families. Thank you to all of the First Responders who are currently on the scene," he wrote. "Absolutely devastated to learn of this tragedy in Annapolis," Maryland Governor Larry Hogan said. "Please, heed all warnings and stay away from the area. Praying for those at the scene and for our community."