According to the police report, the woman gave birth last January and was diagnosed with bipolar disorder and had been receiving treatment since April. 

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In the police interview, the woman reportedly stated, "I felt like if I didn't kill my own daughter, someone else would've." 

Recent studies have shown that 1 out of 10 new mothers in Korea become depressed after giving birth. However, those who get professional help are rare, and these cases of mothers harming their own babies are alarming the Korean society.