Two children and two adults were found gunned down in a burning house in Houston on Sunday morning, according to a report.

The victims, a girl and boy – aged around 10 and 13, respectively – and an adult man and woman in their 50s were discovered by firefighters shortly after 8 a.m. at a residence in the southwest of the city, KHOU reported, citing police.

There was no sign of forced entry into the home, leading investigators to believe the bloodshed was an incident of domestic violence.

“I get angry when someone loses their life in our city due to violence, but especially when it comes to young children. They hadn’t even lived their lives and that’s not fair, ”Houston Police Chief Troy Finner said on Sunday, according to the report.

“It’s just really sad. It’s Sunday morning on a bank holiday weekend. I want people to pray for the family.

Police did not immediately provide a description of the suspect, but did promise to arrest the killer.

“Whoever is responsible for this, rest assured we’ll find him,” Finner said.