Fremont -- No explanation has been found for a loud boom, like an explosion, that was heard around 10:30 a.m. Tuesday.

Neither Fremont police nor the fire department has received information that would explain the noise.

Fire department Lt. Doug Crowell said he believes the noise may have been a sonic boom.

"It rattled the building," Crowell said of the fire department. "We haven't had any calls about it."

The News-Messenger and the police received inquires about what the noise might have been.