Woman accused of fatally stabbing sister after post-wedding argument

BALTIMORE -- A woman is charged with first-degree murder after fatally stabbing her sister after an argument, according to Baltimore County Police.  

Police said they responded to a residence around 1:35 a.m. on Sunday, where they found a female victim sitting on the ground in the driveway with a large amount of blood on and around her, according to court documents.  Another witness was sitting with the victim, holding her, police said. 

Police said when they asked the victim where the suspect was, she pointed to another woman, Brianna Jarrells, who was later identified as the victim's sister.  She was taken to the Baltimore County Police Headquarters for interviews, along with the other witnesses. 

Officers discovered the victim had an injury to her neck, and transported her to the University of Maryland Hospital, Shock Trauma.  She was pronounced dead at the hospital.

A witness told police that Jarrells and the victim were sisters, and came to his home after attending a wedding earlier in the evening. 

According to court documents, the sisters got into a minor argument, which escalated as the evening continued. Shortly after 1 a.m.,  the witness said he walked the two sisters to their car.  As he walked back to his house, he told police that he heard the victim say "oh my god" repeatedly - turning around to find her on the ground. The witness helped the victim before retrieving Jarrells' cell phone to call 911. 

Police said Jarrells began speaking with an officer as she waited to be interviewed by a detective. According to the court documents she told the officer, "I know it's real, I actually used a utility knife. I never actually tried, I pinned it up to her as a warning, I need to shut the [blank] up."

At the crime scene, investigators found a yellow box cutter several feet from where the victim was located.

When the detective attempted to interview Jarrells, she declined to speak with them. According to police the detective then told Jarrells that the victim had died from her injuries. Unprompted, she responded, "Oh [blank] I thought I just nipped her," and began to cry.