Hi, Inspector 2 - Vampires Are Among Us (1989)

In the first sequel of "Hi Inspector", the cops Boki and Pajko get bored in their quite little town until the arrival of foreign visitors. These people reside at the local hotel where international conference on organ transplantation takes place. At the same time, the fresh corpses of deceased people begin to disappear, while the rumors about the vampires at the graveyard start spreading. The cops try to solve the riddle.