For my story, two cops decide to go out and investigate a suspect on their own. The suspect is no an official suspect, but one of the cops has a hunch, and that's it. So he persuades the other to go along with it. However, if the cop with the hunch is killed, and the other police are trying to investigate who did it, what if the other cop comes to his superiors and say that there may be a suspect but it was just the dead cop's hunch, based on nothing more than the dead cop saying he had a hunch, is that enough to get a warrant to search the suspect's property, or do any further investigating? Or is it not, since it's just hearsay which came from a cop who is now dead, and has no more evidence to offer? In order to get a warrant, one needs probable cause, right? But does this legally count?