4 hospitalized, including FedEx employees, following hazardous material exposure in Concord

CONCORD, Calif. (KGO) -- Four people, including two firefighters, are hospitalized after being exposed to a hazardous material in Concord on Monday, fire officials said.

It happened on Bisso Lane just before noon.

A FedEx delivery driver and his assistant were exposed to a chemical called organophosphorus, an insecticide.

The two reported feeling dizzy as they were delivering a package that got damaged in transit, according to Contra Costa fire officials.

The two firefighters were then also exposed to the chemical, and went to the hospital.