Krishnan stalked her, checked her phone and underwear, and also made allegations about her infidelity in front of other family members. Following an argument in October 2017, in which he threatened suicide, Madam Raithena slept in her daughter's room.On the night of Oct 26, Krishnan started drinking as he listened to a recording. He suspected she was having an affair with"Saravanan", a name she had mentioned in the recording.
He then dragged her out to listen to the audio clip, but she struggled and begged him to stop. Krishnan then stabbed her repeatedly until she stopped moving. His daughter and nephew found Madam Raithena's body at about midnight. Krishnan returned to Singapore the next morning and surrendered himself.
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