Correction & clarification: An image of an unrelated passenger jet bridge was initially published in a story about the jet bridge collapse at Baltimore-Washington International Airport. It has been replaced by an image of the scene of the accident.

Investigators discovered a defective metal bracket on the jetway bridge that partially collapsed Saturday evening at Baltimore-Washington International Airport, injuring six people.

The Maryland Department of Transportation said in a statement that metal brackets on this jet bridge, as well as five others from the same manufacturer, are going to be replaced. Airport operations won't be affected.

The six injured people were sent home from the hospital on Sunday.

The airport had provided details about the incident via Twitter: "Preliminary info indicates 6 individuals transported to local hospitals w/ non-life-threatening injuries."

In a statement, Southwest Airlines said Flight 822 had just arrived from Punta Cana, Dominican Republic, and requested paramedics to help with a medical situation involving a passenger.

Southwest said the airport’s jet bridge, which connects the plane to the terminal, failed while medics were helping the passenger outside the aircraft. Southwest said remaining passengers safely exited the plane using air stairs.

Twitter user @PJPressesPlay posted a video on the social networking site that appeared to show a firetruck on the scene.

Contributing: The Associated Press

Follow Dalvin Brown on Twitter: @Dalvin_Brown