12-year-old boy wrestles knife away from half-brother as he stabs great-grandparents in car, officials say

HOUSTON – Harris County Sheriff Ed Gonzalez is calling a 12-year-old boy a “hero” after he stopped his 20-year-old half-brother from stabbing their great-grandparents Sunday.

Officials say Lucian Adrian Johnston and the preteen were in a vehicle with their 92-year-old great-grandmother and 76-year-old great-grandfather Sunday when an argument began. The couple was driving Johnston to a friend’s house because his behavioral issues were becoming more aggressive, officials said.

When the great-grandmother told Johnston that he can’t come home until he gets evaluated by a doctor, he attacked her with a knife as the vehicle was coming to a stop, officials said. He then attacked his great-grandfather with the knife as well, officials said.

“Johnston began stabbing both victims from the backseat in the head and neck with a pocket knife,” officials wrote in a press release.

That’s when Johnston’s little brother stepped in.

“The real hero in this ordeal, is a 12-year-old that was also in the backseat at the time of the brutal attack,” Harris County Sheriff Ed Gonzalez tweeted. “He managed to wrestle the knife away from Johnston & threw it out the window which successfully stopped the attack.”

The great-grandparents told deputies that if it wasn’t for their 12-year-old grandson, they believe Johnston would have killed them, officials said.

In another tweet, Gonzalez said the boy “truly prevented a double murder.”

Johnston fled when the vehicle stopped in the 4200 block of Mount Vinson Way, officials said.

Monday morning, deputies discovered Johnston hiding behind a home in the Mason Lakes subdivision and he was arrested. He faces two counts of aggravated assault with a deadly weapon.

Officials said the great-grandmother received five staples to her head and the great-grandfather received stitches on his neck.

Both victims are expected to recover from their non-life-threatening stab wounds.

The couple told investigators that Johnston had violent tendencies, but not to this extent, officials said.

A judge Tuesday set Johnston’s bail at $240,000. A protective order was also issued for the two victims.


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