A Georgia resident is accused of fatally shooting his 72-year-old mother and 73-year-old stepfather in their home after they returned from celebrating the stepfather’s birthday. The individual reportedly told authorities he was “tired of them and wanted to be alone,” according to police reports.

The arrest warrant indicates that Martin Duberry, charged with two counts of felony murder and other related offenses, claimed he was unsure of how many times he shot his parents after the initial shots to their heads. Local law enforcement provided these details in their official statement.

Duberry, 31, contacted 911 himself to report the tragic incident, which unfolded on December 6 at a residence in Cobb County, as per a local NBC affiliate, WXIA. The victims, Monica Brookins and John Wells, had just returned from celebrating Wells’ birthday when they were killed, as detailed in the arrest warrant.

According to neighbors and friends, who spoke with the local Fox affiliate WAGA, Duberry had been living with the couple. The arrest warrant notes that Duberry expressed to investigators his frustration, saying, “He was tired of them.”

“He was tired of them,” police allege in the arrest warrant, citing statements that Duberry gave to investigators.

“Why would somebody shoot two people that when they was letting you live in their house?” neighbor and friend Kay Hughes said to WAGA. “They just don’t have a heart, I guess.”

Police in the city of Powder Springs, where the couple lived, responded to the home and found Duberry there with his mom and stepdad. The pair was rushed to the hospital with multiple gunshot wounds and pronounced dead upon their arrival.

“I just looked out my window, and I saw a man coming [out] his house with his hands up,” neighbor Sanaa Pygatt told local TV station WANF. “Officers had their guns drawn.”

In addition to murder, Duberry has been charged with eight counts of aggravated battery and possession of a firearm during the commission of a crime. Police described the killings as an “isolated domestic situation.” Cops say Brookins was shot five times, while Wells was shot three times.

“They was always super nice,” Hughes told WAGA about Brookins and Wells. “Always waving to you, always saying hi to you. … They was just good people.”