Krampf confirmed five deaths and said two people had superficial wounds. Authorities had said earlier that several people were gravely wounded.

Police spokesman Lt. Ryan Frashure said officers raced to the scene, arriving in 60 seconds, and took the gunman into custody without an exchange of gunfire.

About 170 people in all were evacuated from the building as a multitude of police cars and other emergency vehicles converged on the scene. People could be seen leaving the building with their hands up.

The newspaper is part of Capital Gazette Communications, which also publishes the Maryland Gazette and CapitalGazette.com.

In an interview with The Capital Gazette's online site, Davis said it "was like a war zone" inside the newspaper's offices - a situation that would be "hard to describe for a while."

"I'm a police reporter. I write about this stuff - not necessarily to this extent, but shootings and death - all the time," he said. "But as much as I'm going to try to articulate how traumatizing it is to be hiding under your desk, you don't know until you're there and you feel helpless."

Davis told the paper he and others were still hiding under their desks when the gunman stopped firing.

"I don't know why. I don't know why he stopped," he said.

Reporter Selene San Felice told the CNN broadcast outlet she was at her desk when she heard the shooting and ran with some others to a back door only to find it locked. She said she saw a colleague steps away as he was shot but didn't get a view of the shooter as she sought to hide.

"I heard footsteps a couple of times ... I was breathing really loud and was trying not to, but I couldn't be quiet," she added. Having gone to school in Florida, she recalled accounts of a gunman's June 2016 mass shooting attack on Orlando's gay nightclub Pulse and how terrified people crouching inside had texted loved ones. Dozens were killed there.

"And there I was sitting under a desk, texting my parents and telling them I loved them," she said.

Annapolis Mayor Gavin Buckley said the community is grieving the attack on their community paper.

"These are the guys that come to city council meetings, have to listen to boring politicians and sit there," Buckley said. "They don't make a lot of money It's just immoral that their lives should be in danger."

Author Carl Hiaasen wrote on Facebook that his brother, veteran journalist and columnist Rob Hiaasen, 59, was among the dead and that he was "devastated and heartsick." Both grew up in South Florida though Rob Hiaasen has worked his craft for many years in Maryland.

New York police sent counterterrorism teams to news organizations around the city in a move authorities said was a precaution, not prompted by any specific threat. Police could be seen outside The New York Times, ABC News and Fox News early in the evening.

AP