A diner at a New York City Ruth’s Chris Steak House grew so irate over another customer’s spat with a restaurant worker that she stabbed the patron in the back before ditching the restaurant, police said Saturday.

Chaos unfolded at the Ruth’s Chris Steak House on West 51st Street in Manhattan around 10:15 p.m. Friday, after a 24-year-old diner and a worker began arguing, the New York Police Department (NYPD) said. 

Two women eating nearby "became irate about the disturbance" – so much so that one of the women used a steak knife to stab the 24-year-old in the back, according to police and the New York Post. 

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exterior of NYC Ruth's Chris Steak House

Ruth's Chris Steak House located on West 51st Street in New York City.  (Google Street View)

The victim was rushed to a local hospital and was expected to survive. 

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Meanwhile, the women fled the restaurant and headed east on West 51st Street. 

NYPD car

A New York Police Department (NYPD) vehicle.  (Michael Nagle/Bloomberg via Getty Images)

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Joan Thompson, 41, was arrested around 2:20 a.m. Saturday. She was charged with assault and menacing, police said.