Detectives investigating the stabbing of teenage boy in Croydon are appealing for witnesses and information.
Shortly after 16:30hrs on Friday, 3 February officers on routine patrol in Poplar Walk in Croydon came across a large group of youths fighting.
They soon found one youth who had suffered a suspected stab wound to the neck. Officers administered first aid until the arrival of the London Ambulance Service. London's Air Ambulance also attended.
The injured boy - aged 14 - was taken to a south London hospital where he remains in a stable condition.
The Trident and Area Crime Command is investigating the incident.
Four teenage boys were arrested on a Route 198 bus in nearby London Road, near the junction with Montague Road.
They were all arrested on suspicion of affray in connection with the incident and taken to a south London police station. They have since been bailed to a date in late March pending further enquiries.
A weapon was found and recovered in West Croydon Bus Station, it will be sent for forensic examination to see if it is connected to the attack.
At the time of the incident the pedestrian area of Croydon town centre was very busy with people. Trident detectives are appealing for any witnesses to the incident or events afterwards, or anyone with any information about the incident, to contact them.
Anyone that can assist the investigation can contact Trident detectives via 101, or by tweeting @MetCC
To give information anonymously Crimestoppers can be contacted on 0800 555 111 or at www.crimestoppers-uk.org