Jangal Mein Mangal (1972)

Biology Professor Laxmi, in the company of nine of her students, and a convent nun, Sophia, go on a field trip in Kerala, Southern India. Upon arrival, they decide to stay there at a Public Rooming House, which also happens to house another group of students, this time all male, headed by Retired Colonel M.K. Das. After several misunderstandings both the groups compromise and decide to pass the rest of their temporary stay in peace. But fate has other plans for them, for Sophia is killed, apparently murdered by a zombie-like creature, dressed in black, who lives in a nearby grave-yard. Before the police and the others could react, a male student is killed. Three male students do encounter this creature, but it manages to over-power all three, and no amount of force or bullets can stop it. It's main motive seems to kill anyone who stands in it's way, including the police!