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Two more groups of migrants were stopped crossing the English Channel meaning 74 people have been intercepted in three days.
It also totals four incidents in that time.
The Home Office now reveals that two small boats, with a total 31 people, were stopped on Sunday night.
One vessel had 12 migrants consisting of 11 men and a woman.
A second had 19, made up of 14 men, two women and three children.
Border Force were alerted at 11.30pm and intercepted the vessels as they went along the Channel towards the UK.
A Home Office spokesman said: "All individuals were brought to Dover and were medically assessed before being passed to Home Office immigration officials for interview.
"The nationalities of those found are yet to be established. Their cases will be dealt with in line with the immigration rules."
Last Friday two boats with a total 20 people were stopped mid-Channel.
On Saturday at 6am one Albanian was found on the beach at Seabrook, leading to a search for others.
And on Sunday at 7am Border Force were alerted to another incident leading to 22 people stopped at sea.
Over the last year there have also been incidents involving migrants in small vessels off the coast of Deal, Folkestone Romney Marsh and Thanet.