At least five people are dead and several injured after a shooting Thursday at the headquarters for the Capital Gazette newspaper in Annapolis, Md., according to officials.

Police on Thursday night identified five employees of the newspaper who were killed, including several editors, writers and a sales assistant.

"This was a targeted attack on the Capital Gazette," acting Anne Arundel County police chief William Krampf said during a press conference.

ADVERTISEMENT

Krampf said the suspect, described as a white male in his late 30's, entered the building with a shotgun and "looked for his victims as he walked through the lower level."

Authorities said they only have one suspect in the investigation at this time and they have not publicly identified the person, who is in custody.

However, multiple media reports have identified the suspect as 38-year-old Jarrod Ramos, who previously sued the Capital Gazette for defamation in 2012 but had his case thrown out by a judge.

Lt. Ryan Frashure, a spokesperson for the Anne Arundel County Police, told reporters Thursday that officers arrived on the scene about a minute after a call was made for shots fired. He said officers then engaged the suspect.

"The investigation has just started. So as [Frashure] has said, we’re going to be quite a while determining what occurred, how it occurred, and why it occurred," Krampf said.

Maryland Gov. Larry Hogan (R) wrote on Twitter that he was "absolutely devastated to learn of this tragedy in Annapolis," adding that he was in contact with officials responding to the situation.

"Please, heed all warnings and stay away from the area. Praying for those at the scene and for our community," Hogan tweeted.

President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE has been briefed on the shooting, according to White House spokeswoman Lindsay Walters, who said “our thoughts and prayers are with all that are affected.”

The Baltimore Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) also said it is responding to the scene.

BREAKING: ATF Baltimore is responding to a shooting incident at the Capital Gazette in Annapolis, Md. pic.twitter.com/GQ1bMAejzQ — ATF HQ (@ATFHQ) June 28, 2018

Phil Davis, a crime reporter at the Capital Gazette, tweeted that a single gunman opened fire on multiple employees.

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

A single shooter shot multiple people at my office, some of whom are dead. — Phil Davis (@PhilDavis_CG) June 28, 2018

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. — Phil Davis (@PhilDavis_CG) June 28, 2018

There is nothing more terrifying than hearing multiple people get shot while you're under your desk and then hear the gunman reload — Phil Davis (@PhilDavis_CG) June 28, 2018

The Baltimore Sun, which owns the newspaper, reported that police were also present at the Sun offices doing a precautionary sweep of the facility. A spokesman for Baltimore police later said that an all-clear had been given at those offices.

Active Shooter: 888 Bestgate Road #Annapolis. Media staging area is 839 Bestgate Road. — Lt. Ryan Frashure (@AACOPD_PIO) June 28, 2018

WATCH: People seen walking out of Capital-Gazette building in Annapolis, Maryland, after reports of an active shooter. https://t.co/eWjaC4dGlq pic.twitter.com/a4KXTYzVMQ — CBS News (@CBSNews) June 28, 2018

Lawmakers representing the area and state quickly tweeted their thoughts following reports of the shooting.

Rep. John Sarbanes John Peter Spyros SarbanesCongress must finish work on popular conservation bill before time runs out Congress must enact a plan to keep government workers safe The Hill's Morning Report - Presented by the Air Line Pilots Association - Progress slow on coronavirus bill MORE‏ (D-Md.) tweeted that he was monitoring the situation and working with law enforcement on developments.

Sen. Ben Cardin Benjamin (Ben) Louis CardinCongress must finish work on popular conservation bill before time runs out PPP application window closes after coronavirus talks deadlock Congress eyes tighter restrictions on next round of small business help MORE (D-Md.) tweeted that his "heart is with Capital Gazette and the people of Annapolis right now" while Sen. Chris Van Hollen Christopher (Chris) Van HollenCongress must finish work on popular conservation bill before time runs out Democrats fear Russia interference could spoil bid to retake Senate Mid-Atlantic states sue EPA over Chesapeake Bay pollution MORE (D-Md.) tweeted that "we must unite to end the violence."

I am deeply saddened by reports of a shooting at @capgaznews. My thoughts are with the paper’s staff and their families at this difficult time. I will continue to monitor the situation and work with local, state and federal law enforcement as we assess these developments. — Rep. John Sarbanes (@RepSarbanes) June 28, 2018

Devastating. My heart is with Capital Gazette and the people of Annapolis right now. As information continues to come in, I remain as grateful as ever for our first responders. If you're in the area, please stay inside and stay safe. https://t.co/PyCAjfvd1R — Senator Ben Cardin (@SenatorCardin) June 28, 2018

My heart is with the families, friends, and loved ones of the victims as we learn more about this terrible situation. We must unite to end the violence. https://t.co/MINrFfTfUr — Chris Van Hollen (@ChrisVanHollen) June 28, 2018

– Brett Samuels contributed

Updated at 11:15 p.m.