Bad luck seems to be following Jessie J. A guest was stabbed at a launch party in London where the pop star was performing on Tuesday night. The victim is currently listed in "serious" condition.

According to W.E.N.N., the guest was on hand to watch the star at a BlackBerry event at Pulse in Southwark, South London on April 3. An altercation broke out following Jessie J’s performance, and a partygoer was allegedly stabbed in the neck with a broken bottle. He was taken to the hospital, while police held guests inside the venue during the investigation.

"A man in his thirties has been injured following an incident at a party in southeast London," a Scotland Yard spokesman said. "It is believed he was attacked with a broken bottle and the man has suffered a neck injury.

Jessie J took to Twitter to comment on the situation. She wrote: "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."

The stabbing incident is the only incomprehensible event to take place in Jessie J's life this week. A fan of the British pop star reportedly broke her leg so she could be "just like" the 'Price Tag' singer.