The equipment was parked on the remnants of the wall of the old church on Bonvue Street when the wall collapsed about 8:45 p.m. into what was left of the basement, neighbors said.
There were no workers on the site at the time.
“We were standing on the deck when all of a sudden it went over,” said Luveneo Dean, who lives on Capus Way across from the building that she and other neighbors said had been a day care center in more recent times.
Demolition work on the site began last week, Dean and others said. The site is owned by the Urban Redevelopment Authority of Pittsburgh, according to online county property records.
You can see a (bad cell phone) video here: http://bcove.me/76qfcibt