Investigators say a bomb threat was called in at the Walmart Supercenter on Plank Road in Altoona.
The threat was called in around 7:25 p.m. However, it cannot be confirmed or denied at this time whether or not there is a bomb.
There is currently a heavy police presence on the scene. Fire crews and police are blocking the area around the plaza parking lot. Fire officials say one bomb-sniffing dog is in the store now and two more dogs are on their way to the scene.
Officials on the scene say the entire plaza is being evacuated, except for Primanti Bros.
The Walmart is closed until further notice.
WTAJ has a crew on the scene and will update you both on-air and online as we learn more details.