The Delhi Police on Wednesday said three doctors and a fake doctor have been arrested for their alleged involvement in the surgeries of two patients who died in a clinic in south Delhi's Greater Kailash.

Police said the three doctors — Neeraj Agarwal, who runs the Agarwal Medical Centre, Jaspreet Singh and Agarwal's wife Pooja -- and former laboratory technician Mahender Singh were arrested on Tuesday.

Police said the accused were arrested following complaints received in October.

The attendants of the two patients had alleged that Agarwal and three others were involved in performing surgeries of vital organs of various patients, without following proper medical procedure.

According to the complainants, Agarwal is a physician, but performs surgeries as he possesses fake documents.

On October 10, a woman from Sangam Vihar got a complaint filed at the Greater Kailash police station, alleging that on September 19, she took her husband to the Agarwal Medical Centre for the removal of his gallbladder stone.

Before the commencement of the surgery, Agarwal said it will be performed by famous surgeon Jaspreet Singh. But before the surgery, he said Jaspreet Singh could not turn up due to some urgency and Dr Mahender Singh will perform it.

The complainant stated that her husband's surgery was performed by Mahender Singh, Neeraj Agarwal and Pooja Agarwal. When the patient was brought out of the operation theatre, he complained of severe pain and was rushed to the Safdarjung Hospital where he was declared "brought dead".

According to Deputy Commissioner of Police (DCP) Chandan Chowdhary, Agarwal would take the help of non-qualified people, including his wife and former laboratory technician Mahender Singh, while performing surgeries and Jaspreet Singh would make fake surgery notes.