(AP) A gay Wichita, Kansas man who was trying to adopt a 10-month-old girl with his partner was arrested on suspicion of aggravated child endangerment Thursday when the infant died after he forgot that he had left her and another child inside his car in scorching 90-degree weather.

Wichita police and the state are now trying to piece together why this tragedy happened and why the men didn't realize the children were missing for so long.

An NBC News report says Seth Michael Jackson, 29, and his 26-year-old partner Payton Schroeder were in the process of adopting the 10-month-old girl known as Anna, and Kadylak, when the girl died helplessly in the car.

According to The Wichita Eagle , the other child that was left in the car escaped before things got dangerous. The men have two adopted children and were caring for a total of six children, ranging in age from 10 months to 18 years.

Lt. Todd Ojile explained to the Eagle that an emergency dispatcher received a call at about 6:41 p.m. Thursday alerting them of the incident. Investigators say that the baby girl had been left strapped in a car seat in the back of a four-door sedan Dodge Charger with tinted windows for approximately 2 hours.