LAKE MARY, Fla. — Florida wildlife officers are keeping an around-the-clock vigil on a Lake Mary neighborhood where a woman was mauled by a black bear in her driveway Saturday night, and they said they will stay until the threat has passed.

So far, agents said Monday, they have killed five bears since a 200-pound beast mauled Terri Frana.

“These are very dangerous bears,” Greg Workman, spokesman for the Florida Fish and Wildlife Conservation Commission, said at a news conference outside the gated Carisbrooke community where the attack occurred. “They have no fear of humans,” Workman said. “They are very food-driven.”

Black bears are shy by nature, Workman said, and usually run away when they see people.

However, residents in the West Seminole County area Monday said the animals have become bolder over the years.