Police have sent notices to Yogendra and Paoline in connection with the investigations into the case.

RML Medical Superintendent Dr T S Sidhu has also been asked to join the probe after he said Tomar did not suffer any external or internal injury.

A controversy has erupted over the cause of death of Tomar during violent demonstrations last Sunday with eyewitnesses and a government hospital claiming there were no injuries on his person while the post mortem report contradicted these versions.

The Delhi Police had yesterday released excerpts of report of the post mortem done by a Board of Doctors in the the government Ram Manohar Lohia (RML) Hospital, where he died on Tuesday.

"Myocardial infarction (cardiac arrest) and its complications that could be precipitated by multiple ante-mortem (before death) injuries to neck and chest produced by blunt force impact," Additional Commissioner of Police (New Delhi) K C Dwivedi had said quoting from the report as the cause of 47-year-old Tomar's death.

However, two eyewitnesses claimed that they did not spot any injuries on his person when they tried to revive him after he collapsed near India Gate on Sunday during violent protests against the gangrape of a girl in a moving bus on December 16. Medical Superintendent of RML Dr T S Sidhu, said, there were "no major external injury marks except for some cuts and bruises.

In all our records, there are no severe internal injuries recorded but the post-mortem will tell everything."