Tube passengers have told of the panic on board a London Underground train today when an exploding mobile phone charger led to fears of a terror attack.

Police moved in and evacuated Tower Hill station near the Tower of London after reports of a 'explosion' on a train sparked fears of 'another Parsons Green'.

Officers have since confirmed that a flaming package seen in pictures posted online was in fact a faulty mobile phone charger.

Pictures circulating online show an item the mobile phone charger exploded on a tube train

Another image shows a similar scene, with the flaming package on the floor of the tube train

Murtaza Ali Shah, a reporter for Pakistan news service Geo News, told MailOnline: 'I was sitting in the front carriage and in the second carriage someone started screaming.

'Some people got up and ran into my carriage. There was so much screaming. People from the third carriage started running towards the other end of the train.

'First we thought it was someone with a knife on a rampage. Then I heard a sound like 'biff' but there was no impact. Someone said 'bomb'.

'Then the doors opened and everybody rushed out at the same time. I fell half on the train, half out. Another man was run down and his nose was injured. It was terrifying.

'When we got off, I heard that there was a bag left on the train, everyone thought there was something in the bag and it was something like Parsons Green.'

He said he understood the battery charger was inside someone's jacket when it exploded and he later heard the bag belonged to another person who dropped it in the rush.

The incident happened just a week after a terrorist bomb packed with shrapnel and knives failed to detonate properly on the district line at Parsons Green. Around 30 were injured but luckily no one was killed.

Passengers were evacuated while police and fire crews investigated the blaze

Some of those who were on the platform at the time of today's incident said they saw the charger 'hissing and smoking' in a train carriage.

Dai Rees, 56, from Thames Ditton, was on the train when he noticed a bag 'sparking like a fire cracker'.

He said: 'A lot of sulphurous smoke appeared out of the container which was attached to a thin wire going into the bag.

'At that time everyone started screaming and running in two directions.

'It (the bag) started jumping around and sparking. It all happened within 10 or 20 seconds.'

Fire crews, police and ambulance arrived at the station shortly after the alarm was raised

British Transport Police later tweeted saying the incident was caused by a phone charger

A spokesman for British Transport Police said officers were called to the scene shortly before 12.30 this afternoon.

The force later tweeted: 'Incident at Tower Hill station is not suspicious. Fire believed to have been caused by mobile phone charger overheating.'

London Fire Brigade tweeted: 'We've dealt with a small explosion on a train at Tower Hill station. It is believed to have been caused by a mobile phone charger.'

Pictures from outside the station show crowds of passengers who have been evacuated onto the pavement. A spokesman for the Ambulance Service said one person had received minor injuries.

Transport for London said there was disruption on the circle and district lines while the matter was dealt with.