CENTEREACH, N.Y. (CBSNewYork) — There was another tragedy for the family of a Nassau County police officer who was killed last week responding to an accident on the Long Island Expressway.

Officer Joseph Olivieri’s 39-year-old ex-wife, Christine Bregante, was found dead in her Centereach apartment Monday afternoon, officials said.

WCBS 880’s Mike Xirinachs reports

Her boyfriend made the discovery and notified police, WCBS 880’s Mike Xirinachs reported.

The cause of death was not immediately known. Foul play is not suspected, Xirinachs reported.

A police spokesman said a “non-criminal” investigation is continuing.

Bregante’s body was discovered on the same day as her ex-husband’s funeral in Ronkonkoma.

Olivieri was struck by a sport-utility vehicle last Thursday morning while responding to a multi-vehicle crash on the L.I.E. The veteran cop had gotten out of his patrol car and was walking to some disabled vehicles in the high-occupancy vehicle lane when he was hit.

The 43-year-old was rushed to the hospital where he later died.

Family members, friends and more than 8,000 uniformed officers from more than 100 law enforcement agencies paid their final respects on Monday.

Olivieri was a 19-year police veteran — five with the NYPD and the rest with Nassau County.

Olivieri was the third Nassau County officer of his graduating class to die in the line of duty, and the second killed in two years on the L.I.E.

He had two children from another marriage.

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