Dr Bumbum: Celebrity plastic surgeon arrested in Rio after four days on the run following death of one of his clients

A celebrity plastic surgeon known as "Dr Bumbum" has been arrested four days after he went on the run following the the death of one of his patients.

Police said Denis Furtado was detained at an office complex in Rio de Janeiro on Thursday following an anonymous tip.

His patient Lilian Calixto, 46, died following a buttock enhancement procedure, police said.

Police also arrested his mother, Maria de Fatima Barros, who worked with him.

Officers say Furtado performed the procedure on Ms Calixto at his Rio home on Saturday.

The bank manager fell ill during the procedure and Furtado rushed her to a nearby hospital, where she died hours later.

Investigators say the exact cause of her death has not been determined.

Furtado has amassed a large online following for his plastic surgery work - in particular on Instagram where he has more than 650,000 followers.

The surgeon is known for posting before-and-after shots of buttocks procedures.

He disappeared after he dropped Ms Calixto off at the hospital and a judge issued a warrant for his arrest.

Inside a police station on Thursday, Furtado told reporters he was innocent of any wrongdoing. "There was an occurrence with the patient," he said.

In a video posted on social media after his arrest on Thursday, Furtado called the woman's death a "fatal accident," saying he had performed 9,000 such procedures and that they were legal in Brazil.

The doctor's lawyer, Naiara Baldanza, said in a statement that "any conclusion regarding the death of Lilian Calixto and my client's responsibility in this fatality is premature".