Police in China have launched an investigation after the death toll in the collapse of a platform under construction at a power plant rose to 74.

Initially 40 people were reported dead after part of a 1,000 MW coal-fired power plant under construction at the GaChina Fengcheng coal power plant accidentnneng Fengcheng power station in China collapsed on Thursday morning.

According to first reports from Xinhua, the accident was caused when scaffolding around a cooling tower platform collapsed. Later on Friday, the official China Daily newspaper said the accident happened when a tower crane collapsed, triggering the collapse of the entire construction platform as the night shift was being relieved by the morning shift.

The construction of two coal-fired power units at the site began last July and were expected to be completed by early 2018, the local Yichun city government said on a verified social media account last year. 

The expansion project cost a total of $1.1bn, it added.

In August a pipeline explosion at a coal-fired power plant in the neighbouring province of Hubei killed 21.

[bc_video account_id=”1214147015″ player_id=”4855923358001″ video_id=”5220988098001″ min_width=”320px”]