ORANGE COUNTY, Fla. -- There are growing fears that Africanized honey bees, so called "killer bees," are spreading in Central Florida. Eyewitness News found out Thursday that state tests have confirmed that the bees that swarmed a helicopter earlier this year in Kissimmee were in fact Africanized.

That attack happened at the Kissimmee Airport, but Thursday there was another possible case, this time in Orange County near Orange Avenue and Oak Ridge Road.

The only way to tell for sure if the latest case is Africanized bees is to do DNA testing, which is why Eyewitness News collected a sample to send off to the state.

A state expert told Eyewitness News and he couldn't tell just by looking at pictures. People can try to figure it out by gauging the bees' aggressiveness, but that could mean you've found out too late.

Killer bees react ten times faster than common honey bees and they will chase a person a quarter of a mile and sting again and again and again. Even looking through a camera's powerful zoom lens, you cannot see the subtle physical traits to determine whether they're killer bees. Twenty of the tiniest parts of the bees have to be measured in a lab.

"I'm more concerned about the kids, because they play in there and hang from the trees," said resident Richard Liput.

Liput saw the swarm not too far from his apartment at South Ridge Apartments on Oak Ridge Road (see map). He reported it to management right away and they called an exterminator.

The exterminator arrived and noticed another hive inside the rafters of one of the buildings. Wearing a protective suit, he sprayed both hives and helped Eyewitness News take samples to send off to the state's bee expert in Gainesville so in can be determined whether they are killer bees.

The state has about 500 traps all around Florida to monitor the killer bees. They're showing up more and more often in Martin County, just two counties away from Brevard.

Africanized honey bees are already blamed for at least one death in Florida this year. It happened on April 9 in Okeechobee County. Africanized honey bees have been in Florida since 2002 and since 1990 the bees are blamed for at least 17 deaths nationwide.