Spiked Soda Kills Girl at Sleepover California police treating 14-year-old's death as 'suspicious' By Sarah Whitmire, Newser Staff Posted Jul 11, 2011 1:15 PM CDT 7 comments Comments (Shutterstock) (Newser) – Soda spiked with an unknown substance left one California teen dead and three others ill after they drank the "strange" tasting beverage at a sleepover Saturday night, the Press Democrat reports. The 14-year-old girl was found dead on her bedroom floor around 9am yesterday. Her mother reportedly told police that she woke up around 2am or 3am to two of the girls vomiting; and hour later, she woke up to the other two, including her daughter, doing the same. The girls told the mother it was food poisoning, and she cleaned them up then returned to bed. They told investigators didn’t know what was in the drink, but that they all drank from the soda their friend passed around and that it tasted strange. Investigators are treating the death as suspicious, and are awaiting toxicology reports to determine what was mixed with the soda. They are still unsure whether alcohol was involved.