A 52-year-old man was in critical condition Sunday after police say someone he knew stabbed him inside a North Philadelphia house overnight.
Police said they hadn't yet made an arrest late Sunday morning, but they knew who they were looking for in connection with the stabbing.
The victim was stabbed three times -- once in the left shoulder and twice in the lower back -- inside a house on 18th Street near Stiles.
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It's unclear what motivated the stabbing.