The United States has expanded its controversial travel ban to include people from North Korea, Venezuela and Chad.

The White House said the restrictions follow a review of information sharing by foreign governments.

Donald Trump issued a presidential proclamation late on Sunday.

“Making America safe is my number one priority. We will not admit those into our country we cannot safely vet,” Trump said.

Other countries mentioned are Iran, Libya, Somalia, Syria and Yemen. Individuals from these countries will all be subjected to severe new restrictions on entry into the US.

The new rules will come into effect on October 18 and range from an indefinite ban on visas for citizens of countries such as Syria to more targeted restrictions.