Dan GrimmerTrains in and out of Norwich were severely disrupted last night after a man was killed by a train.British Transport Police are investigating the incident which happened at about 5pm Tivetshall, between Norwich and Diss, but said it was 'non-suspicious'.Dan Grimmer

Trains in and out of Norwich were severely disrupted last night after a man was killed by a train.

British Transport Police are investigating the incident which happened at about 5pm Tivetshall, between Norwich and Diss, but said it was 'non-suspicious'.

Commuters faced delays of up to 60 minutes from about 5pm to 8pm with buses replacing trains between Norwich and Diss.

It was the second disruption on the lines yesterday - a man was killed at about 5.25am in Cambridge, causing hours of delays to services between Kings Lynn and London.

The man, who is yet to be named, was described as a 'middle aged white male' who was carrying no identification.

The causality was struck by the 5.17am Cross County service between Cambridge and Stansted Airport. The train was travelling between 40 and 45mph at the time of the tragedy, with nine people on board.

The body has been taken to the mortuary at Addenbrookes Hospital in Cambridgeshire.

A spokeswoman from the British transport police said the incident was not being treated as suspicious.

She said: 'The train involved was the 5.17am Cambridge to Stansted Airport service. The driver saw a man on the track, braked, but was unable to stop in time.

'All trains were stopped in the area. This incident is not being treated as suspicious.

'The line was clear and handed back to Network Rail at 6:37am hours.'

In total around 17 services in and out of Norfolk were affected with replacement buses brought in to serve the line between Cambridge and Royston.

First Capitol Connect said around a dozen services between Kings Lynn and London Kings Cross were cancelled or delayed.

Travellers boarding at stations including King Lynn, Watlington, Downham Market and Ely who were travelling south of Cambridge were affected.

British Transport Police confirmed it was investigating both incidents.