EUSTIS, Fla. -- An angry motorist shot and killed one road worker and wounded another after getting into an argument with them Friday in central Florida, officials said.

Gary Monroe, 66, of Paisley, returned and shot the two workers, according to the Lake County Sheriff's Office. Sheriff's deputies caught him about 30 minutes later.

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Injured worker Jeremy Evans, 32, of Ocala, was flown to Orlando Regional Medical Center with a reported gunshot wound to the lung, emergency officials said. Sheriff's officials identified the slain worker as Foster Lee "Pete" Maloy, 71, of Ocala.

"It's very sad," said Lake Public Works Director Jim Stivender. "These kind of things don't have to happen."

Investigators said the construction company reported an altercation Thursday with Monroe. He returned to the scene just after 9 a.m. Friday, the sheriff's office said.

Construction workers were beside themselves with grief.

"It's just for somebody to come up and just start shooting like that just kind of took everybody by surprise," said one construction worker.

Yesterday, the supervisor was so concerned he called the Sheriff's office to report it. However, by the time deputies arrived the driver was gone.

When the motorist returned, this morning, he got out of his van and began arguing with workers.

"It was pretty scary, just some guy come up arguing with the boss about something that happened or something and Jeremy made him go back to the van to get off the job, and when he did, Jeremy turned away and guy come out with a gun," explained construction worker Terry Sanders.

Some of the workers told Channel 9 that Monroe might have been upset about the traffic caused by the construction. Others say that he had been harassing the female flag-workers, when the supervisor intervened.

Detectives are interviewing Monroe and trying to determine exactly what happened.

Stivender said the crew worked for Art Walker Construction, which is resurfacing and widening county roads. Eustis is 28 miles northwest of Orlando.