Photo: Twitter by asha bee abraham

Activists take to the skies to protest detention

A YEAR after Iranian asylum seeker Reza Berati was killed during rioting at Manus Island, activists have renewed calls to close the controversial detention centre system.

The words "Shut down Manus" were written in the Sydney sky while "Close Nauru" was written above Canberra on Tuesday.

The campaign was funded through a crowd-funding program that raised nearly $10,000 in six days.

Using the funding website Pozible, the organisers, calling themselves Unaligned Individuals, demanded the Manus Island and Nauru detention centres be shut down.

"Neither the hunger strikes nor the revelations of the toxic conditions inside the camps seem to bother our cruel political leaders," the group said on a website.

"Let's show our condemnation of the way asylum seekers and refugees are being treated in Australia, and the very existence of our asylum seeker detention centres."

Mr Berati, 23, died from severe head trauma caused during rioting in the Manus Island facility on February 17, last year.

A parliamentary inquiry found a processing hold-up caused the riot. Two men were charged with Mr Berati's murder.