Italy said that 4,000 immigrants have reached its shores by boat in the past two days - the highest number since it launched a naval operation to rescue them at sea in the wake of two shipwrecks last year.
"The landings are non-stop and the emergency is increasingly glaring," Interior Minister Angelino Alfano told Rai Uno public radio on Wednesday, adding that a corpse had been found on one of the migrant boats rescued.