A couple on Southwest flight 3246 "couldn't keep their hands off each other" and were engaged in some sort of sexual activity in their seats, McCarran Airport officials say.
Police met the couple at the gate but no arrests were made, and the investigation will not proceed, according to Las Vegas Review Journal.
"Apparently, they just couldn't control themselves", McCarran International Airport spokesman, Michael Oram, told the Las Vegas news station. They had been asked to stop their activities by cabin crew but continued.
Heath Montgomery with DIA said the drone flew near the plane just before 4 p.m. but doesn't have the distance confirmed - early reports put it at 100 feet from the plane.
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The aircraft arrived in Las Vegas on Saturday morning.
FAA spokesman Ian Gregor told NBC3 Las Vegas that the only way the agency would get involved would be if the passengers disobeyed a crew member's instructions.
Lieutenant John Liberty, watch commander at Las Vegas Metropolitan Police Department said: 'Nobody on the flight wanted to file charges.
While police did not receive any video evidence from passengers or crew, Oram said video of the incident was posted to social media.