A Lufthansa passenger was furious after he noticed that his luggage was left behind on the tarmac even though he alerted the cabin crew after seeing it from the plane window.

The passenger, identified as Karn Rateria, was on his flight from Germany to Manchester on Sunday when he noticed his luggage through the window. He immediately alerted the cabin crew who did not take him seriously. He then took a photo of the luggage and posted it on Twitter.

“Uhm Lufthansa you’ve left my bag on the tarmac! I told the crew and they just said loading is complete. I can see the bag. And we’re taking off without it. What even is this?” he tweeted.

The airline initially responded by saying, “Very sorry for that. There was an outage of the baggage system at the airport in Frankfurt. My colleagues are doing their best to locate the bags and send them as quick as possible.”

The “infuriated” passenger then pointed out that the bag was left behind at the Munich airport.

“I pointed out the bag out to the crew, one of them spoke to the captain as well, but they just said loading is complete. Even though you could see the bag right there!” he tweeted.

However, the bag was returned to the passenger. He tweeted a photo of the luggage and thanked people who sent him messages of support.

“To the people who laughed, I shall join you once I’m unpacked. Hope none of you have to watch your bag being left behind and not be able to do anything about it,” he tweeted.

In a statement, the airline manager at Munich airport said, “This was a rare technical problem at the baggage drop, which appeared only for this single registered baggage. However, our ground staff identified this bag quickly and sent this to the passenger. We apologise for the inconvenience.”

Lufthansa Airline
A Lufthansa plane is pictured at Tegel Airport on August 8, 2017 in Berlin. Axel Schmidt/AFP/Getty