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PHILADELPHIA (CBS) – An argument between two roommates ended with a man stabbed to death and a woman under arrest in West Oak Lane, according to police. It happened around midnight in a house on the 6500 block of North 20th Street.

Investigators say a 29-year-old man had come home from work, when the two roommates started fighting.

Police say the victim’s significant other saw the whole thing.

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“So this witness, identified the adult female in the house as the person that stabbed the victim,” said Capt. Drew Techner.

The man was pronounced dead at the scene.