In October, a jet bridge collapse in Pakistan injured one person, according to media reports.
Investigators found a defective metal bracket on the jet bridge that collapsed and injured six people at the Baltimore-Washington airport.
The six people who were taken to the hospital with non-life-threatening injuries Saturday night were released early Sunday morning.
The Baltimore Fire Chief tweeted that personnel involved were taken to the hospital for minor injuries as a precaution.
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.
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Treated were four medics, two Southwest Airlines employees and the sick passenger, FAA said in an email to WTOP.
An airbridge is the enclosed, movable passageway between the terminal and an aircraft, permitting passengers to board and deplane.
"There was a partial failure of the equipment the jet bridge at gate E-10". A spokesman for Southwest said the jet bridge is owned by BWI.
No other operations at the airport were affected, BWI said.