Investigators Arrest Man In Stabbing 
Investigators with the Criminal Warrant Section have arrested a man wanted for stabbing his great grandparents after an argument occurred.
Lucian Adrian Johnston, 20, is facing two counts of aggravated assault with a deadly weapon.
Investigators were searching for Johnston this morning in the Mason Lakes subdivision, when he was spotted behind a home and was taken into custody without incident.
On Sunday December 29, 2019, a patrol deputy, while at Katy Memorial Hospital, was informed that two victims, a 92-year-old female and a 76-year-old male were driving with their 20-year-old great grandson now identified as Lucian Adrian Johnston (06/23/99), when a verbal argument occurred among the family members.
Johnston began stabbing both victims from the backseat in the head and neck with a pocket knife.
When the vehicle stopped in the 4200 block of Mount Vinson Way, he fled the vehicle and ran away.
Both victims wounds are non-life threatening and are fully expected to recover.
Address/Location
Harris County Sheriff's Office
1200 Baker St
Houston, TX 77002
Contact
Emergency: 9-1-1
Non-emergencies: 713-221-6000