A Florida bus mechanic was killed in a shootout with law enforcement after it was discovered he shot a co-worker at point blank range in an alleged premeditated attack.

According to surveillance footage, 59-year-old Rafael Molina ended his shift at Broward County Copans Regional Transit Center last week when he began plotting the demise of his co-worker, Warren Chambers. Broward County Sheriff Gregory Tony said Molina was seen “formulating, contemplating and further planning” his next move. After going into the locker room and reappearing into surveillance view, police said Molina changed out of his uniform into civilian attire and just waited…

Suddenly, Molina removed a firearm from his lunchbox and shot Chambers multiple times at point-blank range, putting him down, the sheriff said. In a sort of exit strategy, the sheriff said Molina then took out a hammer and destroyed his iPhone.

By that moment, witnesses already made a chilling call to 911, reporting that a man in a white t-shirt and khaki pants was walking around with a gun in his hand.

The sheriff said Molina then “strategically” went into an “ambush position” hiding himself inside an empty bus as he waited for the cops to pull up.

Read what happened next from The New York Post:

At least six deputies were then seen in bodycam footage running toward the bus while Molina fired shots at them — with one shouting, “Move, move, move, move, move!”

After a few seconds, a deputy told the others to “hold,” saying, “He’s down.”

A gun was on the ground next to Molina’s body. The killer got off six shots at the deputies — who fired back nearly 50 times, Tony said.

“He made his mind up that he was going to die that day or kill as many people [as possible], including law enforcement,” the sheriff said at the news conference on Friday. “No one’s expecting us to come here and negotiate with someone who is gunning down individuals.”

It’s unclear what the motive for the sneaky killing was. However, NBC Miami reports it stemmed from an argument of some sort. Deputies are currently investigating the contents of his phone to find the motive. The ones involved in the shooting have been placed on “administrative assignment” upon department protocol, the report says.

No matter what Molina’s beef was, the Chambers family is now left grieving their father, son, brother and friend.

“To know him, was a gift. To be loved and cared for by him was a blessing. As we attempt to deal with the shock and unbearable grief of this incident, we ask for privacy to mourn,” the family said in a statement per NBC.