A Boeing 747 pilot near Los Angeles reported Wednesday night another "possible jet pack man in sight." It's the latest in a string of mysterious jet pack sightings near the City of Angels since last year.

       "A Boeing 747 pilot reported seeing an object that might have resembled a jet pack 15 miles east of LAX at 5,000 feet altitude around 6:12 p.m. Wednesday," a spokesperson for the Federal Aviation Administration told ABC News. "Out of an abundance of caution, air traffic controllers alerted other pilots in the vicinity."

       Air traffic controllers could be heard directing pilots in the area to "use caution towards the jet pack." The FAA spokesperson said there were no "unusual objects" that had appeared on the radar around LAX around that time on Wednesday.

       "We were looking but we did not see Iron Man," one person said on the air traffic recording.

       Daniel Slim/AFP via Getty Images, FILE

       A United Express plane drives by the American Air Lines hub at Los Angeles International Airport (LAX) on April 24, 2021.

       The supposed jet pack sighting follows several others dating back to early 2020. In December 2020, a Southern California pilot captured a video of what appeared to be a person with a jet pack flying off the Palos Verdes Peninsula at around 3,000 feet.

       MORE: French ‘bird-man’ Franky Zapata successfully crosses English Channel on flyboard

       Another sighting was reported in August 2020, after two different commercial airline pilots reported seeing a man in a jet pack hovering near LAX, ABC News reported.

       Bing Guan/Bloomberg via Getty Images, FILE

       People watch an Air Canada Airbus SE A320 airplane land at Los Angeles International Airport (LAX) from a nearby park in Los Angeles, Nov. 23, 2020.

       “Reports of unmanned aircraft sightings from pilots, law enforcement personnel and the general public have increased dramatically over the past two years,” the FAA said on its website.

       The agency says it receives more than 100 such reports each month.

       MORE: Pilots report mysterious man with jetpack flying near planes

       Unauthorized operators flying around airplanes, helicopters and airports is illegal and may be subject to fines and criminal charges, including jail time, the FAA Says. The FAA spokesperson said the agency works with the FBI to investigate these sightings.

       “The FAA has worked closely with the FBI to investigate every possible jet pack sighting report,” said the spokesperson. “We have not been able to validate any of the reports.”

       ABC News’ Alex Stone and Mina Kaji contributed to this report.