Bathinda, Feb. 15 -- The Bathinda police on Saturday arrested a woman and her sister for the cold-blooded murder of her two minor children, who were allegedly fed rat poison over the last fortnight.

The victims, identified as eight-year-old Sukhpreet Kaur and six-year-old Fatehvir Singh, were residents of Phulewala village in the Rampura Phul sub division.

While the mother, Jassi Kaur, and her sister, Motto Kaur, are in custody, a third accused, Lakhi Singh, remains at large.

Bathinda superintendent of police, investigation, Jasmeet Singh Sahiwal said that a preliminary probe suggests Jassi was involved in an extramarital affair and killed the children to rid herself of family ties.

The crime came to light after the children's father,...