JACKSONVILLE, Fla.-- Early the morning of Feb 21, four masked robbers -- one of them brandishing two handguns -- robbed the Gate gas station on Hendricks Avenue. Within minutes, one of them would be shot and killed running from a police officer and the other three would be under arrest.
The next day we learned the robbers were teenagers -- Kenneth Duncan, Kenneth Bernard Marion and Robert Wallace, 17, and Richard Douglas, 16. They were students at Englewood High School.
A police officer on his way home saw the masked robbers running from the store, radioed for help and began chasing them through neighborhoods near Emerson Avenue.
Another officer who joined the case claimed he saw Marion reach for a gun and opened fire, killing the teenager.
Last week, the other three pleaded guilty to robbery and felony murder, a charge they faced because a friend was killed in the commission of a felony.
Surveillance video obtained by Channel 4 shows Duncan standing watch at the door as guns are held to the clerk's head. Robbers grabbed money out of two cash registers and try to open the safe. Two minutes later, they were gone.
A few minutes later, Marion was dead and the other three were under arrest. The two handguns used in the robbery were recovered.
A videotaped interrogation showed Duncan in police custody as her mother asked him why he needed to steal.
Richard Douglas, Kenneth Duncan and Robert Wallace
Jacksonville Sheriff's Office booking photos of Richard Douglas, Kenneth Duncan and Robert Wallace
"I give you money. If you need more money, then you need to get out there and work," she said. "You don't live like this .. the Bible says 'Thou shall not steal.'"
Wallace can be seen in interrogation wearing the same T-shirt he had on during the robbery, initially denying he was involved.
"I wasn't there," Wallace tells detectives.
Wallace eventually tells investigators it was him and it was his job to hold the guns. He even said he counted down from five to intimidate the clerk into thinking he was about to shoot.
Douglas, the youngest and quietest of the three, wrapped himself in a sheet and barely spoke to investigators.
Douglas, Duncan and Wallace will be sentenced next month. Their sentences could range from 10 years to life in prison.