A doctor says a Philadelphia woman charged with murder in a client's buttocks-injection death blackmailed him after their affair.

Dr. James Taterka testified Tuesday that he met Padge Victoria Windslowe in 1993 through an online ad for a prostitute.

The Philadelphia Inquirer reports that Taterka said he gave Windslowe a car and $15,000 as veiled messages were sent to his wife or posted online.

The 45-year-old Windslowe is accused of killing a 20-year-old dancer from London during a 2011 procedure involving silicone and Krazy Glue. She has boasted that clients called her "the Michelangelo of buttocks injections."

Several exotic dancers have testified that Windslowe injected them with silicone that sometimes left them injured.

Windslowe is an aspiring rapper known as the "Black Madam" who performed cosmetic surgery on the side.