Wichita police say the shooting death of a 6-year-old girl by her mom’s ex-boyfriend is part of a growing trend of domestic violence in the city.

The Wichita Eagle reports Reimy Rivera was killed early Thursday when her mother’s ex-boyfriend kicked in the front door and started shooting. Police say 37-year-old Joel Humberto Corrales-Vega also shot the girl’s sister, their mother and their 56-year-old grandmother before fatally shooting himself.

Reimy died at the scene. Her 9-year-old sister Dayanara was severely wounded, but appears to be improving, while the two women were in better condition.

Deputy Chief Tom Stolz says police are wondering if a struggling economy is partly to blame for the rise in domestic violence in recent years.

Police say Corrales-Vega had been deported twice from the U.S.