Authorities in Florida said that a manhunt has begun after a Daytona Beach police officer was fatally shot.

“A $100,000 reward is available to anyone who can help police locate the man who shot an officer in the head earlier in the evening,” Daytona Beach Police Department stated in a Tweet. It also included a short edited video of the encounter.

Jakari Young, Daytona Beach Police Chief, stated in a press conference that the shooting occurred just before 9 p.m. while an officer was on what he called a “proactive Patrol.”

“Upon his arrival, he approached a coward who was sitting in a 2016 Honda car with a California tag. Young stated that the suspect shot my officer once in the head while Young was escorting the suspect out of the vehicle.

Young stated that the officer is in a “grave condition” at the local hospital.

The suspect has been identified by police as Othal Wallace, 29. He was described as dangerous and armed.

The chief stated that more than 500 officers responded to the call and Wallace could be in a 2016 Honda HRV with California tags.

Young believes the suspect to be a local resident. Technology suggests that the suspect could be in the Deltona region, which is why Volusia County has been searched.

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Deltona is approximately 30 miles from Daytona Beach.

Young stated that “This entire county is under lockdown until we track down this coward.”