Attempted murder. The man has the intent to kill and attempts to do so.The fact that what he's attempting is impossible to achieve does not avail him. If someone shoots a decoy dummy, thinking it the person he wants to kill or administers what he thinks to be poison, but which is in fact harmless, with the intent to kill, he can't be allowed to get away with what would have been murder, simply because he made a mistake or held a mistaken belief .
Case: Rv Shivpuri [1987] A.C. 1. HL That was 'mistaken belief' in a drugs case [accused tried to import heroin, but the stuff was harmless] The House of Lords explained the application of the Criminal Attempts Act 1981 to cases where the impossible was attempted , and what constituted an attempt in such cases. The result is that Lakitu's example would be attempted murder.