With two more persons succumbing to injuries at a hospital, the death toll in the police firing on a stone-pelting mob of Dalits, who indulged in violence following detention of their leader John Pandian, has risen to seven, the police said on Monday.

Two persons identified as Teerpukani and Vellaichamy succumbed to injuries late on Sunday night.Officials have suspended bus services to rural areas in sensitive districts including Ramanathapuram, Madurai, Sivaganga and Virudhunagar as a precautionary step.

Additional police reinforcements have been brought from Tiruchirappalli, said the police.