It just makes me wonder whether this act of cowardice of killing innocent people might have been carried out by underworld dons who try to manage and manipulate the Indian film industry (bollywood)? It could have been like a message to the actors and actresses and other film industry fellows from these underworld dons telling them that they are not safe if they do not work for them or in their projects. It could have been an attempt from the underworld dons to scare the film industry people.
