Police have charged a teen with second-degree murder in the fatal Halloween shooting of a security guard.

Authorities said tips led them to 18-year-old Nyanda Charley of Mount Vernon. Officers said the teen tried to run, but was arrested Saturday night after he finished his shift at a Nathan's eatery.

Charley's manager told News 12 Westchester the teen called out from work on the night of the shooting. However, the manager said he would never imagine his employee could commit such a crime.

The high school dropout, whose family is from war-torn Sierra Leone, is accused of shooting 52-year-old Neville Webb outside the Oakwood Gardens. Authorities believe the teen may have had an earlier run-in with Webb at the apartment complex. The victim died the next day from his wounds.

"Make no mistake about it, the killing of Neville Webb was a cold-blooded execution of a decent man," said Westchester District Attorney Janet DiFiore.

Chris Webb, who is running for Mount Vernon City Council, is donating his father's organs to nine people.

Charley, who is being held without bail, also faces gun charges. Records show the teen was recently arrested on drug charges.

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