Dhaka, Oct. 2 -- At least 25 worshippers were killed and more than 100 injured when scaffolding supporting a church under construction collapsed in Ethiopia's Amhara region on Wednesday, authorities said.

The incident occurred in the morning at Menjar Shenkora Arerti Mariam Church in northern Ethiopia during an annual celebration of St. Mary. Many worshippers had climbed the wooden scaffolding to view a ceiling mural when the support structure gave way.

"We all had gathered in prayers when suddenly the scaffolding collapsed and people started falling from the ceiling," said witness Mikias Mebratu, who lost three friends in the accident.

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