LOUISVILLE, Ky. (WHAS11) - The all clear was given at Western High School, in Shively, after an 'active shooter' situation was reported through a 911 call on Sept. 18.

No threats were found after police concluded their sweep of the school. 

The school was placed on lockdown for more than an hour after the school system security received a call about an active shooter.

Lt. Col. Carl Yates with the Jefferson Co. Sheriffs Officer tells WHAS11 authorities have canvassed the building twice and haven't found anything at this time. The situation was sourced from a 911 call about a threat on Western High School. Yates said as of now, this appears to be a "bogus" call.

RELATED: Western H.S. releases statement regarding 'active shooter'

Police conducted another sweep of the school before classes resumed. Classes are beginning to return to normal. Josh Meyers, with Shively Police, said they want parents to know the students are safe at this time.

Parents can pick their kids up in the lower parking lot at Western High School. 

Shively Police had multiple units at the school and there are no reports of injuries.

Nearby Waller Williams Environmental School was placed on lockdown in addition to Western as a precautionary measure.

Jefferson County Public Schools will be adding three additional security officers at Western High School's home football game on Friday night.

WHAS11 continues working to get additional information on this developing situation.

Follow WHAS11's Derrick Rose and Julia Rose live from the scene: