Police fear the death toll could rise from toxic batch of drugs on Chapel Street

There are fears the death toll from a toxic batch of pills on Chapel Street could rise.

Three people out partying on Chapel Street South Yarra over the weekend died from drug overdoses while a fourth died following a fall from a balcony.

A further 20 people have been hospitalised and all are believed to have consumed a dangerous batch of MDMA.

A 30-year-old French waiter has faced court charged with trafficking MDMA.

The court heard police could link him only to one non-fatal incident involving a young woman.

Investigations continue and police have serious concerns that the death toll could still rise.