Officials launched investigations...into child deaths in India's mica mines after the Thomson Reuters Foundation revealed children were being killed in illegal mines and their deaths covered up...Jharkhand's Minister of Labour, Raj Paliwar, said on Wednesday he was launching an investigation immediately...I have ordered a probe. I have directed the Labour Commissioner to investigate and submit a report...Children engaged by anybody as child labourers is illegal and we will take strong action against such people whoever they may be and however powerful they are....Iqbal Khan, joint Secretary of Mines in Rajasthan, said the authorities were unaware of child workers in mica but would investigate.