Two killed, seven missing in explosion in a factory

Two people were killed and seven others remain trapped after an explosion rocked a factory in east China's Jiangsu Province early this morning, officials said.
The explosion occurred at a workshop of a biotech company in the industrial park for chemical enterprises in Guannan County, according to the county's publicity office.
A fire caused by the blast has been extinguished.
Rescue work is underway, state run Xinhua news agency reported.