Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Iran Marks Anniversary of Airliner Downing VOA News 03 July 2010 An Iranian woman scatters flower into the Persian Gulf, 3 Jul 2010, during a ceremony remembering the 290 passengers killed when a US warship shot down an Iranian airliner 22 years ago Photo: AP An Iranian woman scatters flower into the Persian Gulf, 3 Jul 2010, during a ceremony remembering the 290 passengers killed when a US warship shot down an Iranian airliner 22 years ago Iranians have marked the 22nd anniversary of the U.S. downing of an Iranian passenger jet with a ceremony at the site where the plane crashed. Family members of the 290 people killed in the incident were among those who gathered in Persian Gulf waters Saturday, where they laid flowers in memory of Flight 655 victims. The Iranian Students News Agency says President Mahmoud Ahmadinejad delivered a message in which he said the "tragic human catastrophe" was "not an understandable incident." The USS Vincennes shot down the passenger plane on July 3, 1988, shortly after it took off from the Iranian city of Bandar Abbas for Dubai in the United Arab Emirates. The U.S. said it mistook the airliner for a hostile Iranian fighter jet. The U.S. paid Iran more than $100 million in compensation for the incident as part of a 1996 settlement. Some information for this report was provided by AP, AFP and Reuters. .