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FRISCO — Police in Frisco are investigating a double homicide, allegedly carried out by the couple's son.

Ryan Callens, 48, and his 49-year-old wife Maria Elena Callens were found dead inside a home in the 12400 block of Shepherds Hill Lane near Coit Road Monday around 2 a.m. A 911 call about shots being fired sent police to the home, near Wester Middle School.

The victims' juvenile son was arrested in connection with the crime. Police say he lived with his parents in the home.

There were several other family members inside at the time, but they managed to escape unharmed.

Neighbors who live next door now have the tough task of explaining to their kids what went wrong.

"We just told [our daughter] the truth. We had to tell her what happened here — that a family member was killed by another family member -- and it happens," neighbor Wanndy Miller said. "Normally we try to shield them from that kind of stuff, but when it's this close to home, we had no choice."

Police say their investigation is far from wrapping up.

"Our crime scene and our detectives are currently working the team as far as gathering evidence, interviewing witnesses, and we'll probably be out here for the remainder of the day," Officer Colby Hill with Frisco police said.

WFAA.com's Jordan Armstrong contributed to this report.

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