A 17-year-old who died in a knife attack outside a central London nightclub was stabbed in the heart, post-mortem tests have revealed.
Tung Le from Deptford, south-east London, was attacked during a row in Cockspur Street on 23 February.
The Vietnamese student underwent emergency surgery following the attack but died on 2 March.
Chien Nguyen, 18, who was initially charged with attempted murder will now be charged with murder, police said.
Mr Nguyen, who is also Vietnamese, of no fixed address, appeared before City of Westminster magistrates on Thursday.