Passengers travelling on trains via Witham this afternoon should expect delays following an emergency services call out in the areas, which has led to train lines being blocked.
The call out was reportedly due to an anonymous tip-off about a potential suicide attempt on the line near the station.
A spokesman for British Transport Police said: "We were called to the line near Witham station, at around 4.20pm on Thursday, 18 September, following reports of a vulnerable person in the area.
"Our officers are carrying out a search with colleagues from Essex Police."
GreaterAnglia had earlier tweeted: "All trains are at a stand in the #Witham area due to emergency services dealing with an incident"
The company then followed up a tweets announcing "Owing to the emergency services dealing with an incident at #Witham the lines are blocked"
It is understood that the lines have been re-opened but that the incident has caused severe line congestion, with services to/from Liv St to/from Braintree, Colchester, Ipswich & Norwich affected.