Boyle Heights cold storage fire enters seventh day as Lineage faces scrutiny over safety record and prior blaze

State regulators have launched an investigation into the incident and some local officials have called it a wake-up call for communities like Boyle Heights, where homes are sandwiched close to industry and manufacturing districts.

Lineage, previously known as Lineage Logistics, the company operating the facility, is billed as the world's largest owner of cold storage facilities.

With a fire burning at a Boyle Heights cold storage warehouse for a seventh straight day, scrutiny is growing over the operator of the massive facility and what sparked the blaze that has spewed bad air across the region.