New Delhi: The Centre has asked the West Bengal government to send a report on the incident of the gangrape of an elderly nun at a convent in Nadia district and the action taken so far.

In a communication, the Home Ministry told the state government to give a detailed report about the incident as to whether there was enough security at the convent and about the steps taken to prevent such incidents in future.

The Home Ministry also asked the West Bengal government to inform what action has been taken to punish those involved in the incident.

The 72-year-old nun was allegedly gang-raped by dacoits at Gangnapur in Nadia district in the early hours on Saturday after which a CID probe was ordered into the incident.

A study of the CCTV footage at the convent in Ranaghat subdivision had shown visuals of four persons, who were allegedly involved in the crime. Police has so far detained 10 people in this connection.

The District SP had announced a reward of Rs. 1 lakh to any individual providing credible information leading to the arrest of the accused.

Prime Minister Narendra Modi on Tuesday expressed deep concern over the gangrape of an elderly nun in West Bengal and the vandalisation of a church in Haryana as he sought immediate reports on these incidents.

"PM is deeply concerned about the incidents in Hisar, Haryana and Nadia, West Bengal," the PMO tweeted.

"PMO has asked for immediate report on facts & action taken regarding the incidents in Haryana & West Bengal," it said in another tweet.

In another incident, an under-construction church in Kaimri village near Hisar, Haryana, was vandalised by a group and the cross replaced with an idol of Hanuman, triggering tension in the area in Haryana.