Allentown firefighters were dispatched to Coca-Cola Park on the city’s East Side on Wednesday evening on a report of a smoky fire touched off by a pretzel oven that was left unattended.

As firetrucks arrived about 6:10 p.m., the smoke was thick but the fire was out, fire officials said. No one was injured.

“When we got there, in one of the storage rooms, there was a heavy smoke condition,” fire Capt. John Christopher said. “What it was, was a pretzel oven. It remained plugged in, it overheated and bags on top of the oven caught fire.

“The sprinkler system kicked in, two sprinkler heads went off and the fire was out when we got there,” he said. “That’s what knocked the fire out. We didn’t have to do anything.”

Christopher said he didn’t know why the pretzel oven was on. He didn’t know of any event going on at the park at the time. He said officials ruled it an accident.

The oven fire reached into a wall, he said. Firefighters checked the walls for hot spots to make sure any hidden fire was extinguished.

Activation of the water sprinklers automatically set off the fire-alarm horns at the stadium, which serves the Lehigh Valley IronPigs baseball team. It took several minutes to shut off the noise.

Just before 10 p.m., firefighters were called back to the stadium on another alarm, but there was no new fire. Workers were resetting the alarm system when it erroneously signaled another emergency.