Fire activity on the Dragon Bravo Fire, located at Grand Canyon National Park’s North Rim, remains “extremely active,” according to an incident update Monday.

Sen. Ruben Gallego echoed Gov. Katie Hobbs’s sentiment and called for an investigation into the federal control strategy of the Grand Canyon fire.

A Grand Canyon water treatment facility located at the North Rim caught fire on Saturday, causing chlorine gas to be released into the air. Multiple closures are being enforced due to the incident.

A wildfire is rapidly spreading near the Grand Canyon, and has grown more than ten times in size over the last 24 hours. The White Sage Fire is located around 250 miles southwest of Denver, Colorado and has grown from 1,