A toddler apparently drowned Monday at a pool at his home in the Olney section of Montgomery County, authorities said.

The boy, who was 34-months old, died after an incident that occurred in the 17200 block of Sandy Knoll Drive, the county police said.

They said police and fire and rescue personnel were sent there about 11:45 a.m. in response to a report of a drowning in a pool. When they arrived, a neighbor was performing CPR on the boy, who was taken to a hospital where he died.

Police said the boy was under the supervision of a caregiver at the time of the incident.