A septuagenarian in Maryland has been charged with killing her 82-year-old neighbor with a brick, officials in Prince George's County said Monday.

The woman was killed sometime before 7:15 a.m. Sunday in the town of Bladensburg, a community of around 9,000 northeast of Washington, D.C.

Chun Yong Oh is accused of striking Hwa Cha Pak multiple times with a brick, the Prince George's County Police Department said in a statement. She then called 911 to report the murder, according to police.

Pak was found in a garden in the Bladensburg apartment complex with “upper body trauma.” She was pronounced dead at the scene.

“On September 8th, at approximately 7:15 am, officers with the Bladensburg Police Department responded to an apartment building in the 5900 block of Emerson Street for a welfare check,” a spokesperson for the Prince George’s County Police Homicide Unit wrote in the statement.

Oh has been charged with first- and second-degree murder and is being held without bail, according to police and online jail records.

The killing occurred in a senior living facility, citing neighbors. The neighbors told the station that the women were longtime friends, NBC Washington reported.

Prince George's County police said that Oh and Pak “had been in a dispute prior to the murder" but did not elaborate. When police arrived, they found the beaten woman in a garden in the back of the building, and she was pronounced dead at the scene.

"My heart just sank. My heart just sank, because she was just delightful," a neighbor told NBC Washington of the victim.

Citing sources, the station reported that the argument may have been over a long-term debt.

“Who in their right mind, or what kind of evil, had to creep up to take my grandmother’s life?” Pak’s oldest grandson Andy Kwon told the Washington Post.

Pak helped raise nine grandchildren and was a great-grandmother of three.

Police have asked anyone with information to contact detectives. Online court records show that Oh is scheduled to have a preliminary court hearing Tuesday.

crime scene This is a representational image showing a crime scene. Photo: Getty Images/Jonathan Alcorn