Police were called to the scene in the 4100 block of K Avenue, between East Parker Road and East Spring Creek Parkway, around 1:25 a.m. A 2010 Chevrolet Camaro was upside-down in a creek embankment, and its driver — 25-year-old Mason Todd Geis of Plano — was dead.
Geis was wearing his seat belt, police said. No one else was in the car.
Investigators determined, with the help of witness statements, that the Camaro had been speeding north on K Avenue when it hit a curb, flipped and landed in the embankment.
Police said the investigation is ongoing.