By Daily Mail Reporter PUBLISHED: 14:41 EST, 14 November 2013 | UPDATED: 15:34 EST, 14 November 2013 Sarah Chavez, 22, is accused of fatally stabbing a 30-year-old woman at a Las Vegas bar on Tuesday night A 22-year-old woman has been arrested for allegedly fatally stabbing a mother of two who tripped her boyfriend over in a Las Vegas bar on Tuesday night. Sarah Ann Chavez is accused of killing 30-year-old Misty Elaine Madera following a brawl at Champagne's Cafe on South Maryland Parkway about 11pm. Officers found Madera lying in the back parking lot with stab wounds to her neck as Chavez, covered in blood, was being held back by a bar patron.
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Sarah Ann Chavez, 22, is accused of fatally stabbing Misty Elaine Madera, 30, outside a Las Vegas bar on Tuesday night
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Witnesses said the women brawled after Madera tripped over Chavez's boyfriend inside Champagne's Cafe
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Madera, a mother of two, died in hospital
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Chavez has been charged with murder
@placeholder reportedly yelled, 'She has a knife', before she was attacked.