Kolkata: Even as police are yet to make any arrest into the gang rape of a nun in a convent in West Bengal's Ranaghat, a Christian missionary school in Jalpaiguri district has received a series of threat letters and a phone call - one of which even hinted at a replay of the Ranaghat crime.

The nuns of the St. Capitaneo Higher Secondary School for Girls at Champaguri in Nagrakata block received five threat letters and a phone call between March 11 and 21.