There are delays between Norwich and London because of a tree leaning on power cables on the line to Diss.
A shuttle bus is currently in operation between Norwich and Diss and there are delays of about 30 minutes on both directions of the line.
Network Rail and Greater Anglia do not know when a normal service will be resumed. There are currently engineers on site who are looking at removing the tree which is causing the obstruction.
All lines have now reopened on Greater Anglia trains between Diss and Norwich.
A1066 Park Road closed in both directions due to building fire at house fire between B1077 Denmark Street and Mere Street.
Police have confirmed the package discovered in the Royal Mail delivery office in Diss this morning is no longer being treated as suspicious.
Explosive Ordnance Disposal officers from the MOD attended the scene and have confirmed the package is a genuine parcel.
The exclusion zone has been lifted and nearby roads re-opened.