Police have released CCTV footage of a group of men wanted over the gang-rape of a 71-year-old nun in India.
The elderly woman needed surgery after she tried to stop bandits robbing a Christian missionary school in Ranaghat town, some 50 miles from Kolkata (Calcutta), on Saturday.
The robbers tied up the school's security guards and entered the nuns' room. They took their victim to another room when she tried to block their way and raped her.
A security camera in the staff room captured the faces of four of the six suspects, and police have offered a reward of 100,000 rupees (around £1,000) for information.
The attack is the latest in a string of high-profile gang-rapes in India and comes after a spate of attacks on churches.
Superintendent Arnab Ghosh said five people are being held in connection with the crime, which appears to have been carefully planned.
"CCTV footage showed that six men, aged between 20 and 30, scaled the boundary wall around 11.40pm and entered the school and disconnected the telephone lines.
"At least two of them were armed and the rest were carrying burglary tools. In the chapel, a holy scripture was found torn and ... a bust of Jesus was broken."
Prayers for the nun, who is being treated in a hospital near Ranaghat, were held in churches across West Bengal on Sunday.
"In our Sunday Mass, we prayed for the sister to recover quickly from trauma, fear and her physical injuries. We will pray for her again this evening," said Thomas D'Souza, the Archbishop of Kolkata.
"They not only committed a heinous crime, but they also vandalised the chapel ... This is the first time such an attack has happened in India."
Last week, India banned a documentary about the gang-rape of a student in 2012 that sparked international outrage.
Authorities said screening India's Daughter could have caused public disorder, but critics accused the government of being more concerned with the country's reputation.
The killing of the 23-year-old student on a bus in Delhi led to a major reform of India's rape laws, although many campaigners say it has made little difference to women's safety.