UPDATE 4:21 PM, Feb. 10, 2018
Escondido police say the incident has been resolved.
According to police, somebody dropped off a package at DD's Discounts and didn't threaten anything or speak a word. Police called in the San Diego County Sheriff's bomb squad, and they found architectural plans inside and nothing else.
Police said they aren't looking for a suspect as a crime wasn't committed.
(KGTV) -- Police have evacuated a north San Diego County shopping center while authorities investigate a suspicious device late Saturday afternoon.
Police were called to a store located at 405 N. Escondido Blvd., after someone reportedly made a threat and set a canister on the floor inside one of the stores, a source told 10News.
The incident prompted evacuations at several other stores, including some of the animals being treated at a nearby PetSmart veterinary clinic.
A bomb squad has responded to the scene, a witness told 10News.
The 10News traffic map shows severe road congestion in the area surrounding the shopping center, commuters are advised to use alternate routes.
This is a developing story. Stay with 10News for updates.