Police said Sunday a 19-year-old man was charged in a fatal stabbing after he drove the victim to the hospital.
Investigators said 17-year-old Max Brustein was stabbed in the parking lot of Lone Star Comics on Independence Parkway in Plano at about 3:45 a.m.
"They are associates," Officer Rick McDonald said. "I don't know what type of associates they are, but they do know of each other at least by name and face. I just don't know if they're good friends or what exactly is their background."
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Torres drove Brustein to a local hospital, where the Plano Senior High student died at about 6 a.m., police said.
Torres, who has been charged with murder, was being held Sunday night in the Plano City Jail.
According to the arrest report, Torres is a shift manager at a local Jack in the Box restaurant.
Plano police said they are interviewing witnesses about the stabbing.