SPRING ARBOR, MI — A swarm of bees forced a Spring Arbor business to go on lockdown Tuesday afternoon.

Dozens of employees at Prologix, a book and magazine distributor in Spring Arbor, were kept safely in rooms after a swarm made its way through a warehouse door.

"The bees flew in one of our warehouse doors and we quickly put the staff into inside break rooms for their safety," said Nancy Ritter, warehouse manager at Prologix.

None of the 55 employees inside the building was injured or stung, Ritter said.

"No one seemed to be scared. All the employees were quite calm throughout the process," Ritter said.

After about a one-hour lockdown, employees returned back to work. The swarm exited after Ritter and the staff used techniques that Glen Coffie of G&N Honey Bees recommended.

"We shut off the lights and opened the large doors. Most of them exited that way," Ritter said.

Coffie arrived to remove the few remaining bees inside the building.

"I have been getting lots of calls about swarms this past week," he said. "It is normal for this time of year. Bees are reproducing."