SALT LAKE CITY (AP) — The Federal Aviation Administration is investigating after a Delta Air Lines flight leaving Salt Lake City last weekend developed cabin pressure issues and left some passengers with bleeding eardrums, headaches and bloody noses.

More details have emerged about the recent Delta Air Lines flight that developed a cabin pressure issue. While the pilots managed to quickly turn around and successfully land the plane, there are now reports of some passengers on the aircraft requiring medical assistance upon landing due to bleeding noses and ears.

Authorities are investigating a flight that turned around after the aircraft did not properly pressurize. Passengers bled from the ear and nose, local media said.