MONTEREY, Calif. - UPDATE: 12/28/2017 10:47 a.m. The Monterey County Sheriff's bomb squad detonated a suspicious device at the Monterey County Fairgrounds Thursday morning.
Authorities told KION the suspicious device was found on a construction site at the fairgrounds around 9 a.m.
Commander John Thornburg said the device was described as a suspicious package with wires sticking out. He said the device turned out to be a battery pack.
Witnesses reported hearing a loud boom around 10:30 a.m. No injuries were reported.
The Monterey County Sheriff's Office is investigating a suspicious package at the Monterey County Fairgrounds.
According to Commander John Thornburg, a call for a suspicious package with wires sticking out of it came in at 9 a.m. Thursday. The bomb squad is at the scene.
At this time the public is advised to avoid the area.
KION will update this article as more information becomes available.