A woman who police said shot and killed a man outside a Westside post office Sunday afternoon was the victim's ex-girlfriend, according to the Jacksonville Sheriff's Office.

Investigators said 22-year-old Arianne Myles just so happened to see her ex-boyfriend, 23-year-old Harold Davis Jr., while she was driving by. Police said she parked her car behind his, got a gun from the back seat and started firing.

Investigators said several witnesses, including the person in the car with Myles, saw her shoot Davis several times, killing him, then get back in her car and head north on Blanding Boulevard.

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