Director of Immigration Benson Kwok says more officers will be deployed to verify documents submitted as part of Top Talent Pass Scheme applications, following reports of false information being provided on occasions.

"We will look into each case very carefully. Since June last year, we have been carrying out verification procedures for applicants' academic qualifications," he told reporters on Saturday.

"If verification procedures have not been carried out before, they will be conducted when applicants renew their pass."

Meanwhile, Kwok also said national security risks persist in Hong Kong.

"The Immigration Department will not lower its guard, and it will make coordination actively on the implementation of the national security legislation," he said.

"The department will continue to safeguard the southern gateway to our country and comprehensively block those who endanger national security from entering Hong Kong."