British Transport Police is warning young people in Corby to stay off the railway tracks after a number of recent incidents.
Sergeant Rob Bowley said: "There have been instances recently where children have been seen to trespass on the track close to Corby station and an industrial area. "
"Trespass may not sound like a serious offence but, in the unforgiving environment of the railway, it can be fatal."
"Anyone who trespasses onto the railway is taking a gamble with their own lives, as well as the lives of all the staff and passengers travelling on the trains."
Police are stepping up patrols in the area and warning that anyone caught trespassing on the track will be dealt with appropriately.