Trains at the station have been cancelled or delayed due to the incident, National Rail has said. The 4.38pm train to Cardiff from Holyhead was among those cancelled. A message on National Rail's website says: "This train has been cancelled because of the emergency services dealing with an incident." An update on National Rail's website states: "A trespasser on the line at Wrexham General means that some lines are blocked. As a result trains travelling through this station may be delayed.