Law officers in Liberty County, Texas found no evidence of a "strange object" flying about 150 feet beneath a Continental Express plane.

Sheriff's Department Cpl. Hugh Bishop said deputies looked for a possible launch or landing site.

A spokeswoman for ExpressJet Airlines, which operates Continental Express, told The Associated Press on Tuesday that the pilot followed standard operating procedures.

Kristy Nicholas said the pilot of the Embraer 145 told flight controllers that the "strange object" he saw never showed up on his radar Friday night.

Nicholas said the plane, with 23 passengers and three crew members, had just passed 11,000 feet, going to 16,000 feet.

Flight 2822 from Houston's Bush Intercontinental Airport continued safely on to South Carolina and Greenville-Spartanburg International Airport.

The Federal Aviation Administration did not immediately return a call for comment.

Source: Associated Press