Iranian Nobel Peace Prize laureate Shirin Ebadi has accused Iranian authorities of attempting to conceal a deadly crackdown on protesters by cutting internet access and suppressing information.

In a post on Instagram, Ebadi said the shutdown of communications and alleged intimidation of witnesses pointed to an effort by Iran’s government to “kill in silence and then erase it”.

Ebadi called out a pattern of “organised killing” carried out under the cover of internet blackouts. She also demanded the internet’s immediate restoration, and an independent international investigation into the bloodshed.