An apparent bee attack has left two hospitalized.

The Grandview Fire Department reported responding to an apparent bee attack on April 12. Emergency personnel said that they had seen what seemed to be millions of “very aggressive bees.”

The GFD police chief later told WFAA that the estimate was exaggerated.

Orkin officials report that the most common bees encountered by homeowners are honey, carpenter, and bumble bees. These bees typically become active during the spring and remain active through the summer months into the fall.

However, the time these creatures typically become most aggressive is during the late summer into early fall months due to them reaching the end of their life cycles, according to American Family Care.

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The GFD posted images of what appeared to be the hive within the walls of the home and outside the house.

“There were 2 patients actively being attacked by swarms of bees, 2 occupants trapped in the house with bees and unable to escape due to more bees,” said GFD officials in the Facebook post. “4 firefighters suffered multiple bee stings, with no adverse reactions,” they continued.

Emergency personnel eventually used foam to subdue the swarm and tend to the four victims.

The two outside, a man in his 30s and an elderly woman were both sent to different hospitals to treat the bee stings. Officials say that AMR and Air Evac were used to transport the patients.

Emergency personnel escorted the remaining two inside, a boy and another older man, out of the house.

While the four are expected to be fine after this event, two small dogs in a kennel outside the home were killed due to the amount of bee stings sustained, according to WFAA.

A beekeeper was later called in to remove the bees from the home.

GFD officials advised citizens to be aware of bees this time of year.

“It’s that time of year folks, BEE aware and stay safe,” said GFD officials in the Facebook post.