A bench comprising justices M Jaichandren and S Nagamuthu suspended the sentence when appeals filed by the six challenging the order of a court in Tindivanam came up for hearing.
Additional District and Sessions Judge P Selva Muthukumari had on February 3 held the six guilty and convicted them for offences including murder, possession of deadly weapons and rioting and awarded life imprisonment.
Several buses and other vehicles were damaged and set afire in the clashes during which one Selvaraj of PMK was found murdered at Kazhikuppam bus stand.
Police had arrested the six persons in connection with the murder.