UPDATE: Man, 17, wounded in St Helier Avenue knife attack

Police taped off streets around Morden on Saturday afternoon after a reported stabbing involving a group of teenagers.

Mark Gale, owner of Doggy Boutique in St Helier Avenue, said he thought the stabbing happened at about 2pm in Moreton Green, a five-hectare park in Ravensbury ward.

Blood reportedly found on a stretch of St Helier Avenue around the corner from the park led police to tape off the pavement and send sniffer dogs down it.

Mr Gale said police taped off a stretch of the pavement from the junction of Bristol Road to the junction of Boxley Road for about three hours on Saturday afternoon.

Met Police has yet to comment.

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