A domestic dispute reportedly led a 17-year-old Indiana boy to fatally shoot six people — including his parents and two siblings — at their home on Sunday.

The 15-year-old sole survivor is reportedly the suspect’s younger brother. The boy, who was found shot near the family’s Indianapolis home, told police that he heard gunfire upstairs after the 17-year-old was reprimanded for leaving the house without permission and was told the issue would be addressed later, according to WXIN.

The 17-year-old apparently first shot his parents, Kezzie and Raymond Childs, both 42. The surviving victim said he then heard his sister, Rita Childs, 13, scream, “He shot them,” before additional gunshots rang out, the news outlet reported.

The boy reportedly said his older brother then came down the stairs with a Draco gun and opened fire. WXIN reported that the boy fled the home while his brother kept shooting at him.

Also killed in Sunday’s mass shooting was Kiara Hawkins, 19, who was pregnant. Her unborn son, who was nearly full-term, did not survive. It is not immediately clear how Hawkins is connected to the other victims.

The 17-year-old suspect was arrested in Plainfield hours after the deadly shooting. Though he has not been publicly named due to his age, that may change if he is charged as an adult.

For the latest true crime and justice news, subscribe to the ‘Crime Stories with Nancy Grace’ podcast. Listen to the latest episode:

[Featured image: Kezzie Childs, Rita Childs; Raymond Childs, Elijah Childs/Facebook]