Eight children of migrant workers fell sick after they accidently swllowed castor beans here on Sunday. According to the police, two families from Patna in Bihar are working in a brick kiln at G. Mangalam. On Sunday, the children accidentally swallowed castor beans from a plant near the kiln and fell unconscious. They were rushed to Hosur Government Hospital. The children are aged between four and 10. The Bagalur police are investigating.