Deptford
Eight fire engines have been dispatched to the building on Childers Street.
The manager of the shop in Deptford said all his customers have moved away.
Joel Urhie was killed in a fire at his family home.
The police say it is not believed Joel was the original target of the attack.
A seven-year-old boy was killed in a fire at his home in Deptford, south-east London. The blaze in Deptford, south-east London, was believed to have been started deliberately.
'The pain we can never forget.'
