According to Ramapo Police, the 31-year-old brother of Richard Mackey of Sloatsburg was arrested on Wednesday, Oct. 23, and charged with criminally negligent homicide.
The older brother has been identified as Raymond Mackey, also of Sloatsburg, said Ramapo Police Det. Lt Michael Colbath.
According to police, the Sloatsburg brothers were driving the riding lawn mower when they attempted to cross Route 17 and inadvertently drove into traffic and were struck by a 2006 Honda that was traveling southbound, police said.
The driver of the Honda, a 49-year-old man from Monroe, stayed at the scene and cooperated with police.
The two brothers were treated by Rockland Paramedics and Sloatsburg EMTs.
Mackey was charged was arraigned in the Village of Sloatsburg Court and released on his own recognizance.
He is due back in court on Nov. 20.
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