Jessie J 'so sad' after stabbing at London concert

Jessie J has expressed her sadness after a man was stabbed in the neck following a performance she gave in London last night.

The Voice UK coach and 'Price Tag' star was performing at central London club Pulse as part of a Blackberry BBM corporate event shortly before the incident occured. It is reported that a man was stabbed in the neck with broken bottle at around midnight. A man is already being questioned by police regarding the incident.

Rapper Wretch 32 also performed at Pulse last night.

Tweeting about the incident, Jessie said: "My thoughts are with the person who was seriously injured last night at the blackberry bbm party. So sad. I really hope they are ok."

Meanwhile, a statement from Scotland Yard reads: "At around 12.07am the ambulance service called police regarding a man injured in a club off Southwark Street.

"He is thought to be in his thirties and has been taken to hospital in a serious condition. The victim is thought to have been injured with a bottle."

Celebrities in attendance at the party included rapper Chip, TOWIE and Made In Chelsea cast members and N-Dubz producer Fazer.