A battle over a lobster diving spot off the Florida coast allegedly escalated into an underwater nightmare after a man was accused of shutting off another diver's air supply, a confrontation that landed him behind bars on an attempted murder charge. Authorities allege Simpson then threatened to turn off the surface-supplied air system providing oxygen to an 18-year-old diver searching for lobsters. FLORIDA MAN GIVES AN INCREDIBLE INTERVIEW ABOUT HOW HE FOUGHT OFF AN ALLIGATOR WITH A FISHING POLEInvestigators allege Simpson left before deputies arrived. Srebnick said Simpson was diving from his own boat with friends and his two young children and "never disabled anyone's diving equipment." Fox News Digital has reached out to the Miami-Dade Sheriff's Office for additional comment.