Baltimore police have arrested Anita Jones (pictured) after they say she fatally stabbed her husband inside John Hopkins Hospital

Baltimore police have arrested a woman they say fatally stabbed her husband inside John Hopkins Hospital in Baltimore.

Police arrested 30-year-old Anita Jones on Saturday and charged her with first-degree murder stemming from the stabbing death of 33-year-old Christopher Yancey.

On Friday, police in Baltimore said a man was found dead of multiple stab wounds in his young son's room at the hospital.

Police spokesman T.J. Smith said in a statement that officers were called to the room at around 2.30pm after hearing reports of a disturbance.

Smith commented that the man was in his son's room with the boy's mother.

Their 14-year-old son was there to undergo a minor medical procedure. The stabbing occurred when the boy's parents were left in a private room alone together.

When they arrived hospital staff told them that Jones and Yancey had been arguing in a room.

Christopher Yancey, 33, was found stabbed to death inside the hospital Friday afternoon

Jones then came out and told staff that Yancey had cut himself. Staff members found Yancey suffering from multiple lacerations. He was pronounced dead. Jones left the hospital before officers arrived.

Police say no weapon was found in the hospital room, and Yancey's injuries were determined to be inconsistent with suicide.

Police spokesman T.J. Smith (picturerd) said that officers were called to the room at around 2.30pm

Smith says the man was stabbed in the upper body.

The hospital said in a statement that the stabbing was an isolated incident.

'We would like to extend our deepest sympathies to the family of the deceased,' Johns Hopkins Hospital spokeswoman Kim Hoppe said.

Since this is a police investigation, we must defer all inquiries to them,' she added.

Friday's killing marked Baltimore's 281st homicide in Baltimore in 2017, a record for the city.

The world-renown hospital has been at the epicenter of violent events within its parameters before.

The most-notable incident occurred in 2010, when a Virginia man entered the hospital and shot his mother’s doctor, killed his mother and then killed himself, according to The Baltimore Sun.

The man, Paul Warren Pardus, blamed Dr. David B. Cohen for paralyzing his mother during surgery. Dr. Cohen survived the homicide attempt.