U.S. customs computer system back online

WASHINGTON (CNN) - A nationwide computer failure briefly shut down terminals at U.S. Customs entry points all over the country, a spokesman said Wednesday.

Customs and Border Protection spokesman Mike Balero said the failure happened at about 7 p.m. ET and lasted for about 30 minutes. Not all the country's entry points were affected, he said, although he could not say how many were.

Balero said the temporary problem caused no backups.