David Mohr was heart-broken at the news: Roleaux, the dog he had for five years and that was stolen during a carjacking Sunday morning, was found dead Monday afternoon.

The chocolate lab-weimaraner mix was inside Mohr's truck, which he had left running with the air-conditioning on Sunday while he stepped into a doughnut shop on Antioch Road in Baton Rouge.

Once Mohr entered the store a, a woman jumped into his truck and began to pull away. Mohr ran back outside and tried to stop the woman from driving away, getting hit by the truck door and dragged for about 20 feet, WAFB-TV reported.

He sustained two fractured hips and other minor injuries, authorities said.

Law enforcement officers found the truck Monday in the 4000 block of South Sherwood Forest Boulevard; Roleaux was inside, dead, said East Baton Rouge Sheriff's Office spokeswoman Casey Rayborn Hicks.

It appears the dog died of heat exhaustion.

A person who witnessed the theft saw the suspect and contacted law enforcement, Hicks said.

Friends and families of the victim had posted on Facebook after the incident, seeking help from the public as they searched for the dog.

News of the carjacking spread quickly on social media Sunday afternoon and evening with hundreds of people asking their friends to help find Roleaux.

Leslie Aguillard, 30, was arrested Monday on theft of a vehicle, theft of an animal, attempted second-degree murder, cruelty to an animal, and theft.

An emotional David Mohr, Roleaux's owner, spoke to WAFB from his hospital bed after the news broke his dog had been found.

"He was my king," Mohr said. "I had five wonderful years with Roleaux. He would greet me everyday with the same enthusiasm as if I were gone for six weeks, or if I had just been gone for a day."