Human rights group Pusat Komas has kicked off a campaign to pressure the government to free unconditionally, activist Lena Hendry, who was convicted of airing a documentary on Sri Lankan civil without approval.

The campaign, dubbed #defendlena, will run until March 22, the day the Magistrate's court is due to deliver a sentence against Lena under Section 6(1)(b) of the Film Censorship Act 2002.

"We want more people to be aware of the case and pressure the government to drop or overturn the case," said Pusat Komas director Anna Har.