The incident happened at around 9.40pm on Monday, 20 May outside Homerton Overground Station in Berger Road, E9. It was reported that a male in possession of a knife approached two other males. The suspect threatened the males with the knife before stealing their bicycles.
Officers attended but both the suspect and the two victims had left the scene.
There have been no arrests and enquiries continue.
Anyone who was in the area and witnessed this incident, or who has footage that could assist police, is asked to call 101 or ‘X’ @MetCC and quote 01/378864/24.
You can also report information anonymously to the independent charity Crimestoppers on 0800 555 111.