BROCKTON (CBS) – A two-year-old girl drowned in her neighbor’s swimming pool Sunday evening.

WBZ NewsRadio 1030′s Doug Cope reports

Yandeliz del Carmen Claudio wandered over to a small above-ground pool two doors down from her home on South Leydon Street.

She apparently climbed a three-foot ladder that leads to the water’s edge.

Police don’t know how long the toddler was in the water.

“I just don’t understand how nobody realized a two-year-old was missing out of the house for those many hours, because when she first was spotted out there, it was around 6 (p.m.),” Tamiko Terry told WBZ NewsRadio 1030 Monday.

The little girl wasn’t breathing when she was pulled from the pool just around 8:40 p.m.

Terry’s 15-year-old daughter Natalianna Andrade-Terry tried to perform CPR, but the toddler was unresponsive. She was pronounced dead at a local hospital a short time later.

“That’s the worst thing that a parent can bear, losing your child,” Tamiko said.