Deputies have identified the man as Christopher Ortega.
The shooting happened around 7:45 pm at the Winton Community Park at Winton and Olive.
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Merced County sheriff's homicide investigators believe the shooting was between two rival gangs.
A family-owned food truck, Tacos Rodriguez, was sitting in its normal spot outside the park when the shots were fired.
There were three workers in the truck at the time.
Moments later, they heard and felt a crash when a car hit the back of the truck.
The owner, Maria Jimenez, says she was scared and worried that someone was shooting at her family in the truck.
When authorities arrived at the park, they found the car that had crashed into the taco truck had a teenager dead inside.
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They later found the second person who was injured.
Deputies say the shooting was a very dangerous situation and they're thankful no families were there at the time.
This is Winton's second homicide this year.
Authorities say if you have any information, to please contact the sheriff's office investigations bureau.
EDITOR'S NOTE: The video above is from a previous broadcast and will be updated.