Police are appealing for witnesses after a teenage cyclist was stabbed in Thornton Heath.
Officers and London Ambulance Service were called at 11pm on September 26 to reports of a stabbing.
The 16-year-old boy was found in Buckingham Avenue with stab injuries to his chest and arm.
Detectives would like to speak with anyone who was in the vicinity at the time of the stabbing.
They are particularly keen to speak with the driver of a black car, believed to be a BMW 1-series.
Anyone with information is asked to call Croydon CID on 07769 922321 or via 101. Alternatively, they can call Crimestoppers anonymously on 0800 555 111.
Two people have been arrested and released under investigation.
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