Greek Aegean Airlines sent an apology letter to PLO Secretary-General Saeb Erekat on Wednesday, in which it expressed its deep regret about the "racist behavior" faced by two Arab-Israeli passengers on one of its flights.

Two Arab-Israeli passengers on an Aegean Airlines flight from Greece to Israel were removed from the aircraft before takeoff on Tuesday after Israeli passengers objected to their presence.

The company's CEO Dimitris Gerogiannis sent a letter to Erekat in which he expressed his deep regret over the "unprecedented" incident.

Erekat said the incident set a dangerous precedent. He called on the Greek government to take strong action against this act and compensate the two Palestinians.

"This abnormal behavior is reminiscent of the worst periods of [the] apartheid regime in South Africa," he said.