GRAPEVINE (WBAP 24/7 News) - Police say a night of partying with drugs and alcohol most likely led to the deaths of two teenagers in Grapevine.  

They say Southlake Carroll High School seniors Kyle McNutt and Chase Nunez both died of an apparent overdose.

They also say the teens' 22-year-old friend, Cullen Marino, failed to call for help after finding them unresponsive.  Marino faces charges of criminally negligent homicide. 

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