The accidents happened less than a mile and a half between the two.
The latest accident happened at 3 a.m. at Tidwell and Mesa.
Police said a man on a bike was riding along Mesa and was hit by a car. The driver did stop, and investigators said the area is not well lit.
Earlier, around 10:30 p.m., a man who was walking was hit and killed in a dark area along Mesa and Cockburn.
The driver who hit him stopped. Police said she did not show any signs of intoxication.
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