Police are waiting for separate toxicology reports that may be able to determine whether Alvarez had certain quantities of the drugs in his system, Sandoval added.
Days after Texas bus stop crash, little info on the victims
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Sandoval said there are three possible explanations for the collision: “It could be intoxication; it could be an accident; or it could be intentional.
SUV driver hits crowd at Texas bus stop near border; 8 dead
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