Some Delta Air Lines passengers are recovering after a pressurization issue on a flight from Salt Lake City to Portland caused bloody noses and other issues, according to airline and passenger statements.

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.

A cabin pressure issue on a Delta Air Lines flight from Salt Lake City, Utah to Portland International Airport in Oregon forced the crew to make an emergency landing after 10 passengers suffered bloody noses and ears.