Jamie Buckley, the mother of an 18-month-old girl who died in a hot car, claims that she forgot about her daughter for nearly eight hours while teaching at a Panama City, Fla., elementary school.

Authorities headed to the school after receiving a medical call and found Reagan Buckley unresponsive. The child was found in her car seat and was pronounced dead at the scene, according to USA Today.

Buckley only discovered her daughter after she finished work, at around 3:15 p.m. The child had been inside the car since around 7:30 a.m. The temperature that day was 83 degrees, causing the car's temperatures to increase too, killing the toddler in the process.

Once outside temperatures reach 80 to 100 degrees, temperatures inside a car can climb up to 131 to 172 degrees, and most temperature increases inside cars occur during the first 15 minutes of being left in the sun, according to a 1998 case study from the Centers for Disease Control and Prevention.

Social media posts questioned how a schoolteacher could possibly forget about her own child, especially when she is teaching other children all day.

The first hot car death this year occurred Apr. 20 in Phoenix. The incident involved James Koryor who, while drinking, left his 2-year-old son in his car for several hours, according to the Washington Post.