A U.S. Customs and Border Protection processing systems outage caused delays Monday night at JFK Airport and other airports around the country.

International travelers at multiple airports took to social media express their displeasure after they faced delays and long lines during processing.

Customs officials said the agency's processing systems at various airports experienced outages at 7:30 p.m.

The systems are back online following the two-hour outage, but Kennedy Airport officials said travelers may still be delayed in the International Arrivals area.

Customs and Border Protection said its officers continued to process travelers using "alternative procedures" during the outage.

According to the agency, it still had access to national security-related databases so passengers could be screened appropriately. It said there is no indication at this time that the service disruption was "malicious"

Contact your airline provider and airport to determine if your flight has been affected.

Photo above courtesy Twitter user @PhineasJFR