Alarms sounded in the cockpit of a Southwest Airlines jet shortly after taking off from Hollywood Burbank airport near Los Angeles on Friday, prompting evasive maneuvers, the airline said in a statement.

Two attendants were hurt on Friday during an emergency maneuver on a Southwest flight departing Hollywood Burbank Airport.

One person on the flight said on social media that some passengers “flew out of their seats and bumped heads on the ceiling.”