State fire authorities have moved to revoke the pyrotechnic licenses of the companies and their owners who were keeping fireworks in a Yolo County storage facility that exploded in July, killing seven people.

In a statement, Cal Fire said its Office of the State Fire Marshall has determined through its administrative investigation that Kenneth Chee and Craig Cutright and their respective companies violated firework laws and regulations. Chee owns Devastating Pyrotechnics, Inc., and Cutright owns Blackstar Fireworks.

The explosion happened just after 6 p.m. on July 1 near County Road 23 and County Road 86A in Esparto, a small, rural town about 37 miles west of Sacramento. Video footage captured the explosion, which also caused a wildfire that burned about 80 acres.

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