Two senior former UPA ministers Ghulam Nabi Azad and Sushil Kumar Shinde are likely to be questioned by the Delhi Police in the Sunanda Pushkar murder case, according to senior officials.

The police want to know whether there was any pressure from Shinde, the then home minister, on the Delhi Police to go slow on the investigation of Pushkar's death. Or whether he was prodded by the party high command to scuttle the case. 

The links, if any, will be exposed by early February. Shashi Tharoor, meanwhile, is expected to be back in Delhi by Sunday and is likely to be questioned in the case.

The final medical report by the All India Institute of Medical Sciences in the mysterious death of Sunanda Pushkar says that she died of poisoning, administered either through oral route or injection and the injuries on her barring one were a result of a "scuffle", according to the police FIR lodged in this case. 

Read: Why Delhi cops believe Sunanda was murdered