Streatham Hill stabbing: Forensics team and sniffer dog pictured gathering evidence outside Starbucks

An investigation is underway in Streatham Hill following this afternoon's stabbing (Image: Jordan Pettitt/PA Wire)

Residents have been urged to avoid the busy shopping street (Image: Jordan Pettitt/PA Wire)

A forensics team has been working at the scene for the last few hours (Image: David Nathan/UKNIP)

A pile of bloody clothes remains right outside the door of Starbucks (Image: David Nathan/UKNIP)

A sniffer dog has been sent in to investigate further (Image: David Nathan/UKNIP)

The working animal is also being utilised further up Streatham Hill

A cordon is likely to remain in place for some time (Image: David Nathan/UKNIP)