RANCHO CUCAMONGA, Calif. (KABC) -- An initial DUI charge against the truck driver in last month's deadly eight-vehicle pileup crash has been dropped after toxicology results came back negative for drugs or alcohol.

Jashanpreet Singh , 21, pleaded not guilty to his new charges in a Rancho Cucamonga courtroom Tuesday. He's now facing vehicular manslaughter with gross negligence and reckless driving charges in connection to the fiery crash in Ontario that left three people dead, including a Pomona High School basketball coach and his wife .

His defense attorney calls the deadly pileup a tragic accident, but the prosecution says the driver's actions were reckless, and that he saw the slowing and stopped traffic but continued on, plowing into the victims.

"There is no intoxication whic

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