A 15-year-old boy is accused of shooting and killing his ex-girlfriend's mother and her two siblings at a home in west Texas, police said.

Odessa police said they responded to a shooting at an apartment around 5:45 p.m. on Tuesday. Officers who first arrived at the residence found three people dead inside the home. A 15-year-old suspect fled the scene but was located about 40 minutes later, Police Chief Mike Gerke told local media.

At the time, Gerke said the shooting was intentional and targeted the three victims, according to CBS affiliate KOSA-TV .

The investigation into the shooting revealed that the 15-year-old boy had planned on shooting his ex-girlfriend outside of school but changed his mind and instead went to her home, police said.

There, the suspect entered the home and

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