The habeas corpus case on two disappeared activists was adjourned by Jaffna Magistrates Court on Friday until October, after the state's senior legal representative failed to appear.
The two activists, Lalith Kumar Weeraraj and Kugan Muruganathan, who disappeared in 2011, were organising protests on behalf of families who have had relatives gone missing.
They were last seen in Avaragal near Jaffna as they were making their way to a protest in December 2011.
Supporters state Sri Lankan Security forces were responsible for the mens' disappearances and said that one of the victims motorbikes was later spotted at a police compound.