Manorville, N.Y : Four people died in a multi-car crash on Long Island Expressway Sunday night, August 21, 2016

An 81-year-old man who was injured in a multi-car crash on Long Island that killed four other people, including a former aide to New York Gov. Andrew Cuomo, has died.

Suffolk County police say Isidore Adelson, of Westhampton, succumbed to his injuries late Sunday night. His wife remains hospitalized in critical condition following the crash Sunday morning on the Long Island Expressway near Manorville.

Police say 26-year-old Carmelo Pinales was driving a Subaru that apparently lost control and struck a Honda and a BMW. Pinales, his 27-year-old sister and 10-year-old son were killed.

The driver of the Honda, 29-year-old Scott Martella, also was killed. Martella was a spokesman for Suffolk County Executive Steve Bellone and a former aide to Cuomo.

Six others were injured.

Police are investigating whether speed was a factor.

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The Latest: Man, 81, injured in Long Island crash dies