Three people stabbed to death in east London in less than eight hours

Dagenham Heathway London Underground station, where a teenager was stabbed to death after a reported fight with machetes. Photograph: Justin Kase ztwoz/Alamy

Three people were stabbed to death in separate incidents in east London over a period of less than eight hours as the bank holiday weekend began on Friday.

Murder investigations began after the deaths of an 18-year-old and a man in his late 20s, the Met police said, while detectives are still hunting for the killers of a 16-year-old who was ambushed as he left school and stabbed to death.