Croatian Interior Minister Vlaho Orepi? also said the country “was prepared”.
He said: “The point is to keep a firm border regime, and for all other emergencies our forces are ready to react.”
The British Foreign Office has so far warned of “disruption or delays” due to growing migrant chaos.
The latest breaking point has emerged after more than 15,000 migrants were been left stranded on the Greek side of the border with Macedonia.
This week, Macedonia announced it had closed its doors “completely” to migrants.
Slovenia, Serbia, Croatia and Macedonia have all since tried to close their borders to new migrants.