Kolkata, March 16 (IANS): Claiming that Trinamool Congress MP Tapas Paul's "kill and rape" remark acted as a provocation, the BJP on Monday demanded a CBI probe into the gruesome gang rape of a septuagenarian nun in West Bengal's Nadia district.

"This incident is just an extension of Paul's threatening to kill opposition workers and rape their women," state BJP president Rahul Sinha told media persons here while condemning Saturday's gang rape of the nun of the Convent of Jesus and Mary High School in Ranaghat, some 80 km from Kolkata.

Paul, who represents Krishnanagar Lok Sabha constituency in Nadia, attracted widespread condemnation after he was caught on successive tapes exhorting people to kill Marxist activists and threatened to "unleash" his boys to rape their women.

Accusing the Trinamool of trying to give communal colour to the gang rape, Sinha called for a probe by the Central Bureau of Investigation.

"For the truth to come out, a CBI probe is must. Despite the incident being highly condemnable, the Trinamool is giving it a communal colour and trying to stoke communal disharmony. So we think a CBI probe is imperative," said Sinha, who also flayed police for failing to arrest even a single culprit two days after the incident.