WEST MIAMI-DADE, FLA. (WSVN) - A South Florida man appeared in court and has posted bond days after he allegedly shut off a fellow diver's oxygen supply during the lobster mini-season.

Michael Simpson stood before Miami-Dade Circuit Court Judge Mindy S. Glazer, Wednesday morning. The 51-year-old suspect faces one charge of felony attempted murder.

 Oxygen was allegedly shut off while [the alleged victim] was under the water,  said Glazer.

Investigators said Simpson intentionally shut off a juvenile diver's air supply while the alleged victim was underwater diving for lobsters just off Fisher Island, this past Wednesday morning.

The alleged victim's family provided video from the water appearing to capture the aftermath.

The video showed nearby boaters calling out the man for his alleged actions against the diver with several expletives being used.

Detectives with the Miami-Dade Sheriff's Office said it all started after Simpson and the owner of the boat that the juvenile diver was on got into a dispute regarding their dive locations.

It was then when, authorities said, Simpson threatened to and turned off that diver's air supply.

Investigators said that  the [defendant] became irate and stated,  I'll turn the brownie off if I want to!  all the occupants then observed the defendant swim over to the brownie air supply unit and intentionally turn it off, cutting off the victims air supply. 

Investigators also said the owner of the boat jumped in the water and rescued the boy. When he reached the surface, the juvenile diver appeared to be disoriented, was tangled with the hose and was gasping for air and was confused about what had happened.

Authorities said Simpson boated away and ultimately turned himself into authorities on Tuesday.

In court Wednesday, Simpson's attorney, Howard Srebnick, maintained his client's innocence.

Srebnick released a statement, which partially reads:

 He never disabled anyone's diving equipment. Video footage of the event corroborates that one of the accusers fell off their boat and became entangled in the third lung diving device while Mr. Simpson wa

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