Paul a few days after the murder said at a press conference that a person called Satish had used a particular type of S-shaped knife to stab George. The blacksmith has now told a TV channel that Thomas had approached him to make a similar type of knife hours after Paul described the kind of knife used in the killing,' the Congress leader said.

Satish's mother Vilasini has also alleged that her son is being framed by the police. She said the police had made Satish place a bundle containing a knife that they say was used in George's murder.

In her petition in the high court Tuesday she sought a probe by the Central Bureau of Investigation (CBI). However, the plea was turned down by Justice Sasidaran Nambiar who said that the investigation was on and Vilasini could approach the court later with the same demand.

The Congress and the Bharatiya Janata Party have alleged that police are under pressure because of the alleged links between Home Minister Balakrishnan's son Bineesh Kodiyeri and Om Prakash and P. Rajesh.

Balakrishnan has constantly denied allegations that his son was involved in George's murder, and said the government has 'nothing to hide' in the case.

Senior Communist Party of India-Marxist (CPI-M) legislator P. Jayarajan has maintained that George didn't have a clean record.

'George was arrested a few years back in a drug case and he came out after paying crores of money as bribe. Right now the investigation is going on in the right direction, but the opposition and a section of the media are trying to scuttle this probe to hide certain facts,' said Jayarajan.