As many as 1,000 people may have gone missing at sea due to the storms brought by Cyclone Harry that caused havoc and devastation to southern Italy last month, migrant-rescue NGO Mediterranea Saving Humans said on Monday.

It said the estimate derives from testimonies collected by refugees in Libya and Tunisia.

Mediterranea Saving Humans President Laura Marmorale said it was “one of the biggest tragedies in recent years on the central Mediterranean route” and accused the governments of Italy and Malta being “silent” and “not moving a finger”.