NEW YORK (CBSNewYork/AP) – A man already serving time for two New York City strangulation slayings three decades ago has been sentenced for a third killing.

The Bronx district attorney’s office announced Monday that another 15 years to life in prison has been added to Jesus Aguilera’s sentence.

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He pleaded guilty earlier this month to second-degree murder in the death of Tolila Brown.

The mother of four was found dead in November 1981. She had been strangled with a scarf that was tightened with a chisel. Her hands and feet were bound and her partially-clothed body was left in a shack.

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Aguilera previously was convicted of the strangulation deaths of a man in the Bronx and a woman in Manhattan.

A 15-year-old girl was choked and raped in the Bronx, but survived.

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