A 15-month-old boy has died after being left unattended in a hot car on Monday, according to police in Ridgefield, Connecticut.

Police said the staff at Danbury Hospital contacted them around 6 p.m. Monday. The child's father reportedly drove him to he hospital after finding the baby in his car and becoming concerned for his welfare.

It's not clear exactly how long the boy was left unattended in the car, but Danbury Police Captain Jeff Kreitz said in a news release he was there for "an extended period of time."

Temperatures reached 88 degrees in the Ridgefield area Monday afternoon.

The baby's cause of death has not been determined and authorities have not released the child's name. Police said the family lives in Ridgefield.

It's the fourth incident in which a child or children was left alone in cars in the past two weeks in Connecticut.

Police in East Lyme, New London and Orange have arrested men and women accused of leaving children alone in their vehicles.

Police are warning parents of the dangers of leaving their children in cars over the summer, when temperatures inside the vehicle can reach triple digits.