SURAT: With their situation getting grimmer by each day of the lockdown , an irate mob of migrant workers stranded in Gujarat ’s industrial town of Surat on Tuesday resorted to free-forall violence in two separate incidents reported from Surat Diamond Bourse ’s sites in Khajod and Dindoli.On Tuesday morning, a group of over 1,000 construction workers barged into the SDB office in Khajod and ransacked it. They broke the glass doors and windows and damaged furniture and computers. They also damaged the cars parked outside the site office, police said.“The workers were angry as the developers had brought 40 labourers from outside. They feared they could get infected and that the new workers would take away their jobs,” said a police officer. The situation was brought under control after senior police officials allayed their fears. At least 11 were booked for rioting and arrested.Police also registered a separate offence against the developer for bringing labourers from outside, a lockdown rule violation.In Dindoli, violence broke out when police tried to disperse a crowd that had gathered at a vegetable market. Six persons were arrested for rioting in which one constable was injured.