There is truly nothing as heartbreaking as a young death. This family experienced incredible heartbreak when a small mistake led them to pay a big price. Keep reading to learn more about this heartbreaking tragedy.

Twin toddlers, a boy and a girl aged 18 months old drowned in the family’s pool at their home after their great-grandmother who has Alzheimer’s apparently left the door open.

The family resides in their Oklahoma City home which is where mom Jenny Callazzo found her 18-month-old twins, Locklyn and Loreli at the bottom of a murky pool on their property.