Police in the US have questioned a woman after a young UK resident died in the country following a cosmetic buttock treatment.
Claudia Aderotimi, 20, suffered medical complications in the wake of the procedure.
The young woman from London, thought to be a Nigerian national, travelled to Philadelphia with three friends and had injections in her buttocks on Monday.
She began to suffer chest pains and had trouble breathing and was rushed from her hotel, the Hampton Inn in south-west Philadelphia where the treatment was carried out, to Mercy Fitzgerald Hospital in Darby.
Police investigating her death said the cosmetic procedure was arranged over the internet and have questioned a woman believed to be involved in it.
Ms Aderotimi's family in north London were too upset to talk. Relatives at her flat on the Geffrye Estate in Hackney said it was "too private" to talk about.
A 17-year-old neighbour who did not want to be named said: "She seemed nice and she was pretty. I don't know why she felt she had to do that. It seems like a waste."
In the US, Lt Ray Evers said police carried out a search warrant at the Bergen County, New Jersey, home of a woman they think set up the appointment online. She has been questioned but is not under arrest.
Authorities were still pursuing a second woman they believe performed the procedure, Lt Evers added.
Lieutenant John Walker, of the Philadelphia police south-west detectives division said earlier: "We're not quite sure right now if that person performing that procedure is licensed or unlicensed. We're still working that information right now."