The bench was installed around 9 a.m. at Garfield Park, directly across from the children's playground. It is located at 1000 Park Avenue.
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"Anyone who sits on Piqui's bench will be able to enjoy watching the children play while listening to their sweet laughter," she said.
The bench is accompanied by a plaque that says "In loving memory of Piqui"- what his mother, Ana Estevez, called her son.
The young child disappeared last April while visiting with his father, Aramazd Andressian Sr., who later confessed to killing the boy.
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Andressian Sr. was sentenced to 25 years to life in prison.
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