COBB COUNTY, Ga. — The husband of a woman killed in a fire has been named a person of interest. Powder Springs police said they were speaking to him Tuesday morning.

On Monday, officers said they wanted to question the Cobb County man after his wife was killed in a house fire. The next day, police told Channel 2’s Kerry Kavanaugh they found him inside his wife’s car just before 2:30 a.m. while patrolling a Marietta Walmart parking lot on Ernest Barrett Pkwy.

Authorities said the fire started just after 3 a.m. Monday at a home on Ponderosa Lane in Powder Springs. The victim was found in a back bedroom, officials said.

“I went to the door of each house on either side and told them there was a fire and said, ‘Get out of the house,'” said Dennis Mayton, who lives in the neighborhood.

Police later identified the victim as 55-year-old Kathy Robertson. After the fire, officers said they were looking for her husband, Michael Rowe.

“Mr. Rowe was living at the residence and may be occupying a green Ford Taurus,” said Powder Springs police spokeswoman Kathryn Raines.

Police were looking for a 1995 green Ford Taurus with license plate No. 356 ZMR. Kavanaugh was at the scene as the car was being towed from the Walmart parking lot.

“They located him inside the vehicle, took him into custody. Right now he’s currently being investigated. They are trying to figure out what exactly transpired at the residence,” Raines told Kavanaugh.

Police said Rowe was being cooperative in the investigation.