White Powder Source of Mariner Square Loop Hazmat Scare Never Found

Multiple agencies, including federal agencies, and the Alameda County hazardous material response team, responded yesterday to reports of a substance causing sickness at the Customs and Border Protection office on Mariner Square Loop, but no source substance was found.

Over 28 local firefighters responded to the scene, along with the Alameda Police Department, Paramedics Plus, and representatives from multiple federal agencies, after reports, at around 12:45 p.m., of an unknown chemical odor and powdery substance in an envelope causing sickness.

An employee opened the envelope and began to feel ill, and then two other people reported illness; however, only two were transported to hospital and no employees experienced life threatening symptoms.

Alameda Fire Department personnel quarantined people in the office, and nearby buildings were evacuate. The Alameda County Fire Department hazmat team entered the building.

Yet, after the investigation, no powdery substance was found.

By 5 p.m., the building was deemed safe to enter.

As of this morning, Alameda police told Action Alameda News that there was no crime identified to investigate.