1. Subsequent investigations confirmed workers did not cut off the gas supply before trying to connect two furnaces with a pipeline.
2. A fire broke out due to the blast, but was subsequently extinguished after the flow of gas in the pipeline was cut off.
3. Xinhua News Agency said an operation to cut off the gas planned for 0200 GMT on Friday had been postponed for 24 hours.
4. More than 500 households and office buildings were affected as water and gas to buildings on the east side of Guomao Bridge were cut off.