Sources close to firebrand minister Matteo Salvini warned those not eligible to remain would be forced back into international waters
Some 35 men were blocked from disembarking from a migrant rescue ship in an Italian port on Saturday, while children and the infirm were taken ashore in a controversial new screening process.
The new hard-Right Italian government was facing criticism after signing a decree that effectively abandons asylum seekers they do not deem vulnerable when they arrive by boat.
Sources close to firebrand minister Matteo Salvini warned those not eligible to remain would be forced back into international waters.
Over 87,000 people have landed in Italy so far this year, according to the interior ministry – though only 14 per cent of those were rescued at sea and brought to safety by charity rescue vessels. About 28,000 arrived to the UK last year, with this year expected to outsrip that record.