Updated at 7:47 p.m. Saturday: Revised to reflect that a 1-year-old also died in a hot car in Galveston.

A 4-year-old who was found by a family member in a hot car near Aubrey has died, police have reported.

The child was airlifted to Children's Medical Center Dallas on Friday in critical condition but died Saturday morning, the Aubrey Police Department said in a statement on Facebook.

The child was discovered around 4:45 p.m. in the 10000 block of Franklin Street in Providence Village, according to police.

Aubrey paramedics and firefighters treated the child at the scene before requesting a medical helicopter. The child was not identified.

It is unclear how long the child was in the car. Temperatures in Aubrey were around 97 degrees at the time the child was discovered, and most of North Texas was under a heat advisory.

No charges have been filed, but Aubrey police continue to investigate.

"This remains an ongoing investigation involving multiple state and local agencies, and further details about the incident are not available at this time," Police Chief Charles Kreidler said. "Any conclusions drawn at this point are speculative and could be detrimental to our investigation as we continue our pursuit of information in this case."

Last year, five children died in Texas after being left in hot cars, according to the advocacy group Kids and Cars.

In Galveston on Saturday, a 1-year-old child died after it spent about five hours alone in a hot car while a parent went to work, the Houston Chronicle reported.