HONOLULU (AP) - Maui County sued Hawaiian Electric Company on Thursday over the fires that devastated Lahaina, saying the utility negligently failed to shut off power despite exceptionally high winds and dry conditions.

Witness accounts and video indicated that sparks from power lines ignited fires as utility poles snapped in the winds, which were driven by a passing hurricane. The Aug. 8 fires killed at least 115 people and left an unknown number of others missing, making them the deadliest in the U.S. in more than a century.

Hawaii Electric said in a statement it is “very disappointed that Maui County chose this litigious path while the investigation is still unfolding.”

The lawsuit said the destruction could have been avoided and that the utility had a duty “to properly maintain and repair the electric transmission lines, and other equipment including utility poles associated with their transmission of electricity, and to keep vegetation properly trimmed and maintained so as to prevent contact with overhead power lines and other electric equipment.”

The utility knew that high winds “would topple power poles, knock down power lines, and ignite vegetation,” the lawsuit said. “Defendants also knew that if their overhead electrical equipment ignited a fire, it would spread at a critically rapid rate.”

A drought in the region had left plants, including invasive grasses, dangerously dry. As Hurricane Dora passed roughly 500 miles south of Hawaii, strong winds toppled at least 30 power poles in West Maui. Video shot by a Lahaina resident shows a downed power line setting dry grasses alight. Firefighters initially contained that fire, but then left to attend to other calls, and residents said the fire later reignited and raced toward downtown Lahaina.

With downed power lines, police or utility crews blocking some roads, traffic ground to a standstill along Lahaina’s Front Street. A number of residents jumped into the water off Maui as they tried to escape the flaming debris and overheated black smoke enveloping downtown.

For now, the number of confirmed dead stands at 115, a number that the county said is expected to rise.