New Delhi, Dec. 26 -- Two sisters battling depression, who were distressed over their pet dog's illness allegedly died by suicide after consuming phenyl at their home in Uttar Pradesh's Lucknow, police said on Friday.

According to PTI, investigators found that neither of the sisters used mobile phones or social media and largely stayed indoors. One of them was also known to have frequent anger outbursts and would sometimes damage household items, they said.

The incident took place in Lucknow's Doda Kheda-Jalalpur area.

The siblings had recently adopted a pet dog and had grown deeply attached to the pet - caring for it - "often mirroring each other's actions". The dog had been ill for nearly a month, which left both women "increasingly ...