The man, a safety guard who was directing visitors on the web site within the capital’s Minato Ward, was despatched to hospital along with his head bleeding, in accordance with the Metropolitan Police Department.
The piece of concrete, apparently from an exterior wall, is believed to have fallen from across the fifth flooring of the constructing by way of a development enclosure.
The injured man is in his mid-60s.
An exterior wall all of the sudden got here off, and one thing like a stone fell down, in accordance with one other safety guard who was close by on the time of the accident. Passers-by might have been injured within the accident, the guard stated.
The demolition work began in April, in accordance with a discover posted on the web site. Construction of a 12-story workplace constructing is scheduled to start out in January subsequent 12 months.