JAMSHORO (NNI) - At least two labourers were injured when a blast occurred in the power house of a textile mill located in industrial zone of Kothri, sources said on Friday. A sudden blast took place in a private textile mill. As a result, two labourers suffered injuries. They were rushed to nearby hospital where condition of one labourer is stated to be critical. Due to the blast, electric supply was completely suspended to the adjoining areas. Police reached the site and started investigation.