Two toddlers drowned in a swimming pool when their grandma with Alzheimer’s left the rear door open.

The toddlers were discovered by their ‘distraught’ mother, who administered CPR until emergency personnel arrived.

Two 18-month-old babies drowned in a suburban swimming pool in a “tragic accident,” according to authorities.

Locklyn and Loreli Callazzo of Oklahoma were discovered at the bottom of the pool by their mother on Thursday, March 16, at 10.45 a.m.

According to police, the occurrence appears to be a terrible accident, according to an Oklahoma news site.