EL CAJON, Calif. (FOX 5/KUSI) -- Dozens of federal law enforcement officers, some wearing what appeared to be bulletproof vests, were seen conducting a worksite enforcement investigation in unincorporated El Cajon Thursday afternoon. The operation took place near the 1700 block of Magnolia Avenue across from Gillespie Field, around 1 p.m. The federal officers, which included special agents with Homeland Security Investigations, were seen in footage captured overhead by SkyFOX/KUSI in the Sky leading people away with zip-ties around their wrists. Suspect arrested in series of commercial burglaries Civilians were seen being grouped under a tent and being questioned by federal agents. "ICE along with partner federal agencies are actively conducting a targeted law enforcement operation pursuant to an ongoing criminal worksite enforcement investigation. No additional information is available at this time," an HSI spokesperson told FOX 5/KUSI. According to officials later in the afternoon, a search warrant was executed at the business in question, San Diego Powder and Protective Coatings. Records show the business is legally listed as BJS & T Enterprises Inc. Families of the people involved were later seen waiting for their loved ones outside of the building. People who work in the area told FOX 5/KUSI they have never noticed anything suspicious at the business. Officials said a search warrant will be unsealed with more specific details regarding the investigation. Watch the report by FOX 5/KUSI's Ciara Encinas in the video player above. This is a developing story. Check back for updates. ...read more read less