A police helicopter was on the scene near Bamber Bridge after reports of a body on the track.
NPAS Barton examined the area around 3.54pm on Thursday (October 26).
It was described at the time as a ‘suspicious incident’.
No traces of the body were found on the line.
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A statement from British Transport Police said: “We were called at 3pm on the 26th following reports that a body was seen on the tracks near Bamber Bridge.
“Officers attended and were supported by the National Police Air Service, a full line check with conducted, there was no trace of a person.
“Lines were reopened.”