Depends ... How did you get involved in this situation? Have you been questioned by the police? Why is someone including you? It depends on evidence, DNA, what the crime is? There are loads of things going on here. An eyewitness is evidence Suggestion-whether you are not guilty or if you are worried... Attorney can answer and help. Good luck
They have to have proof to charge you but you can be interrogated as one of the suspects. You need to be able to bail yourself out because, they will look for proof to charge you if you were among them.