We now know why two planes nearly collided at Chicago's Midway International Airport this morning.

Video Shows Near Collision At Midway Airport

According to NBC 5 in Chicago, Southwest Airlines Flight 2504 was approaching the runway to make its landing just before 9 a.m. Just as the plane was about to touch down, a smaller jet was seen crossing in front of its path.

NBC 5 said the Southwest Airlines plane performed what is called a "go around," which involves quickly pulling away from the runway and back up into the air.

A video of the incident shows the Southwest Airlines plane making what appears to be a routine landing before the business jet slowly crosses right in front of it. The plane was able to land safely on the second try.

What Caused The Two Planes To Nearly Collide At Midway?

An investigation into the incident allegedly shows the business jet may have been at fault for the near miss.

The Federal Aviation Administration told ABC News the smaller jet "entered the runway without authorization." It is estimated that around 2,000 feet separated the jet from the Southwest Airlines plane that was coming in for a landing.

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"Air traffic controllers could be heard telling the business jet to hold short and not cross the runway, but the jet did not follow instructions," ABC News said in its report.

No injuries were reported from the incident, which is still under investigation by the FAA and the National Transportation Safety Board.

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