This post has been corrected. See the note at the bottom for details.

Three teenagers were charged Friday in the slaying of a San Diego college student lured by a phony advertisement on Craigslist as prosecutors revealed chilling details about the case.

The three males, all 17 years old, were arrested in the shooting death of an 18-year-old in the Paradise Hills neighborhood on Wednesday. The victim and his girlfriend had gone to buy an item advertised on Craigslist and instead were robbed of money and their cellphones, police said.

Prosecutors said Friday that the victim, 18-year-old Garrett Berki and his girlfriend saw the defendants get into a car. They decided to followed them in their own vehicle.

When Berki tried to box in the suspects' vehicle in a cul-de-sac, one of the suspects allegedly fired one shot through the windshield striking the victim in the chest, prosecutors said.