ABC News October 29, 2019

Suspect in Capital Gazette newsroom shooting pleads guilty, requests jury to determine sanity

WATCH: Capital Gazette reporter: ‘It’s defiance just to be alive right now’

A man accused of gunning down five people in a Maryland newsroom last year has changed his plea to guilty but maintained that he's not criminally responsible for the crimes by reason of insanity.

After previously pleading not guilty on all 23 charges in the indictment, including five counts of first-degree murder, Jarrod Ramos admitted guilt in Anne Arundel County Circuit Court on Monday before a judge who subsequently accepted his plea and found him guilty following a hearing.

But Ramos is still pursuing an insanity defense, according to his attorneys. A jury will determine whether he's criminally responsible.

(MORE: 300 prospective jurors to be questioned ahead of Capital Gazette newspaper shooting trial)

Three days of jury selection is expected to start on Wednesday. The final jury selection will be on Monday, according to Terri Charles, a spokesperson with the courts.

Hannah Gaskill/Capital News Service, University of Maryland, via AP
In this artist court sketch, Jarrod Ramos stands and pleads guilty in Anne Arundel Circuit Court on Oct. 28, 2019, in Annapolis, Maryland, in the slayings of five staffers at the Capital Gazette newspaper. A jury is expected to hear testimony within weeks about whether he was not responsible by reason of insanity.

Ramos, a 39-year-old resident of Laurel, Maryland, is accused of fatally shooting five employees at the Capital Gazette, the daily local newspaper in Annapolis, Maryland, on June 28, 2018. It's the largest killing of journalists in U.S. history.

(MORE: Remembering the 5 Capital Gazette employees gunned down in their Maryland newsroom)

Four journalists -- Wendi Winters, Rob Hiaasen, Gerald Fischman and John McNamara -- and a sales assistant -- Rebecca Smith -- were killed. A garden with five rose bushes and a memorial plaque was dedicated in their honor this year at Acton's Cove Waterfront Park in Annapolis.

Brian Witte/AP
Phil Davis and Rachael Pacella, reporters who survived last year's shooting at the Capital Gazette newspaper, speak to the press outside Anne Arundel County Circuit Court in Annapolis, Maryland, after the gunman pleaded guilty to all 23 counts of an indictment in the case on Oct. 28, 2019. Jarrod Ramos is moving forward with a plea of not criminally responsible by reason of insanity, which will be decided by a jury next month.

Prosecutors allege Ramos had a long grudge against the newspaper and planned the attack.

(MORE: Capital Gazette mass shooting suspect swore 'legal oath' to kill staff writer years ago)

Ramos was allegedly armed with a legally-purchased, pump-action shotgun when he arrived at the multi-office building in Annapolis on that fateful day. Authorities said he "looked for his victims as he walked through the lower level" where the Capital Gazette newsroom is located. He "hunted" his victims, including those who tried to flee, and barricaded the back exit of the newsroom, according to authorities.

Police arrived at the scene of the shooting within a minute and arrested Ramos after finding him hiding under a desk in the newsroom.