SAN ANTONIO — Nearly 5,000 unaccompanied immigrant children were caught illegally crossing the U.S. border with Mexico in October, almost double the number from October 2014, according to U.S. Customs and Border Protection data.

Also, in the figures released Tuesday, the number of family members crossing together nearly tripled from October 2014 – from 2,162 to 6,029.

The numbers spiked despite expectations of lower numbers due to the colder months coming, better enforcement along the border and efforts by Mexican authorities to stem the stream of Central American migrants to the U.S.