( CNN ) -- Two Southwest Airlines flights from Orange County , California , to Phoenix were the subject of security scares Tuesday night , and authorities are investigating whether the incidents are linked . Both planes were eventually cleared after officials determined a threat did not exist . Southwest Airlines flight 811 was headed to Phoenix 's Sky Harbor International Airport from John Wayne Airport when officials removed passengers and brought in a bomb squad and canine units to search the plane , said Laura Eimiller , FBI spokeswoman in the agency 's Los Angeles office said . `` No threats of any kind '' were found , said Orange County Sheriff 's Lt. Joe Balicki . In the second incident , Southwest flight 1184 was taken to an isolated area at Sky Harbor after it flew in from John Wayne Airport after authorities received a `` non-specific threat , '' said Ashley Dillon , the spokeswoman for the airline in Dallas . Passengers and their bags were re-screened . and authorities did not find anything , Dillon said . `` We take any kind of threat seriously , '' she said .
Both planes are eventually cleared . One flight was searched at John Wayne Airport . The other at Phoenix 's Sky Harbor .