Henryk Sebor, a 42-year-old construction worker died on Tuesday when the scaffolding he was standing on collapsed and he fell four stories. The accident took place at the Ansonia, a six-story building in Park Slope. The following is an excerpt from the New York Times:

  A 42-year-old construction worker at a luxury apartment building in
Brooklyn plunged four stories to his death Tuesday evening when he
stepped onto a scaffold that suddenly gave way, the authorities and
witnesses said. Two co-workers tethered to harnesses were left dangling
in the air, and were rescued by firefighters who arrived moments later
as anxious neighbors witnessed the drama.

Ms.
Rosen and other area residents said they looked up to see the two
workers who had been on the scaffold now dangling in the air, and a
fourth worker standing on a second scaffold.

“He’s dead, he’s dead,” one of the workers shouted of the man below.

The
cause was being investigated, the authorities said, but it appeared
that both mechanical failure and human error played some role in the
collapse, which occurred about 5:30 p.m. at the Ansonia, a former clock
factory that was converted to residential apartments over the years by
various developers. The accident took place at one of the buildings, a
six-story prewar at 438 12th Street in Park Slope.