After a horrific crash where a pair of teens were killed and three other critically injured, a search is under way.

Law enforcement wants to know who sold five teens the alcohol that played a role in Saturday's crash off Pleasant Valley Road.  

The CHP is investigating -- trying to find how the teens got their hands on the alcohol.  

Police say 19-year-old driver Gilbert Guzman was drunk and speeding at the time he lost control of the pick up, ran off the road and rolled the vehicle. Guzman was killed in the accident. 

All five people were ejected from the pick up. Officials say none of them were wearing seat belts. 

A 16-year old teen, identified as Christie Brinsley died at Kaiser Hospital Vacaville.  

The remaining two girls and one boy all sustained serious spinal damage among other critical injuries.  

A candlelight vigil for the teens will be held at 7 p.m. at Ruby Park near Foxborough Elementary School in Vacaville.