It happened due to a maintenance issue and crews worked to address the problem, officials said in a statement.

In an update, Airport officials said the issue has been addressed and it's back up and running. While it was down, customer service representatives helped passengers get to their terminals.

Earlier this week, on Wednesday, the airport reported its busiest morning rush in history. According to the airport, Transportation Security Administration agents screened just more than 32,000 passengers at security checkpoints by 8 a.m.