Panic after a bomb exploded on a commuter tube train

An explosion on a London Underground train has left commuters with 'serious facial burns'. Emergency services have been scrambled to Parsons Green station after reports of a home made bomb exploding and injuring passengers. Witnesses reported seeing walking injured after the incident at around 8.23am. There are several images circulating on Twitter of the suspected device which can be seen smouldering in a Lidl shopping bag.