In a ghastly road accident, six persons were killed and 20 others sustained severe injuries in Jogulamba Gadwal district in the wee hours of Monday. The mishap occurred when the bolero in which they were travelling overturned after the driver had lost control over the vehicle on the outskirts of Dharur-Gonpad villages. There were 36 labourers when the tragedy took place. According to reports, the condition of 10 persons is said to be critical. Police are suspecting that overspeeding might be the reason behind the mishap. The injured were rushed to a local government hospital.