Harassed mentally and physically by her in-laws after she gave birth to a third daughter, a 35-year-old woman in an Uttar Pradesh village killed her three children by throwing them into well before attempting suicide, police said Friday.

"Preliminary investigations reveal the woman was quite depressed after giving birth to a girl around two months ago. Gauribai's in-laws, who are now absconding, used to harass her mentally and physically for giving birth to girls. This probably prompted her to attempt suicide and kill her three daughters," police inspector B.P. Tiwari told reporters here.