Woman in her 20s arrested for throwing knuckles at sister's boyfriend found in her home

A woman in her 20s has been arrested after throwing knuckles and other objects at her younger sister's boyfriend, injuring him, after finding the pair in her home.

The Paju Police Station in Gyeonggi Province has detained the woman, identified only as A, on charges of aggravated assault and is investigating the case, police said Monday.

A is accused of throwing knuckles and other objects at B, her younger sister's boyfriend, at around 7:40 a.m. Thursday at her residence in Paju, Gyeonggi Province, injuring him.

A is believed to have attacked B after discovering him and her younger sister being intimate inside her home without her permission.

A was arrested at the scene by officers who responded to a report of the incident.

B sustained a head injury and received hospital treatment. His condition is not believed to be life-threatening.

Police are questioning both A and B to determine the full circumstances of the incident.