A passenger was reportedly nearly sucked out of a cabin window in mid-air on a Ryanair plane.

Witnesses told local media the man, said to be a Serbian citizen in his 60s, was left hanging head first out of the window as far as his shoulders for several minutes, before other passengers on the flight managed to pull him back inside.

In a statement, Ryanair said its Friday morning flight from the Greek city of Thessaloniki to Germany’s Memmingen returned “shortly after take-off when a passenger window dislodged inflight”.

It continued: “The aircraft landed normally and passengers returned to the terminal. One passenger requested and received medical assistance on the ground in Thessaloniki.”

The Irish budget airline added that “a replacement aircraft was arranged to bring passengers to Memmingen” several hours later.

Media reports in Greece and Germany quoted passengers describing a loud bang followed by the window breaking and oxygen masks falling from the ceiling shortly after the Boeing 737 had taken off.

They believe the window was smashed by pieces of the jet’s engine – although Ryanair has not commented on this.

“We immediately realised there had been a decompression. There were screams… for a moment I thought someone had accidentally opened the emergency door,” Christina, a fellow passenger, told Radio Thessaloniki.

“The masks dropped and there was a strong smell. The head and shoulders of one passenger were outside the window. Fortunately, he hadn’t taken off his seat belt.”

The aircraft – believed to have been an 18 year-old-plane – was operated by Ryanair’s subsidiary Malta Air.

The Irish Aviation Authority (IAA) later told the BBC that it “is aware of the incident involving a Ryanair group aircraft, registered and operated by Malta Air, departing Thessaloniki this morning”.

“The IAA will provide any requested assistance to the aviation safety investigation authority in Greece and the Maltese Civil Aviation Directorate, to aid their investigation,” it said.

In 2018, a passenger died when debris from a damaged engine caused a window to break on a Southwest Airlines flight in the US, and she was partially sucked out.