A desperate search was under way for a volunteer fire chief who disappeared when floodwaters swept away his emergency vehicle near Cow Creek in Texas Hill Country.

Past president of the International Association of Fire Chiefs, Gary Ludwig, said that Fire Chief Michael Phillips, of the Marble Falls Volunteer Fire Department, went missing early Saturday after being swept away by floodwaters while responding to a call near Cow Creek in Travis County, Texas, 50 miles from Austin, Texas. 

“Chief Phillips was driving an emergency vehicle when he went missing late this morning,” Ludwig wrote in a post on Facebook.

“The vehicle has been found; however, the Chief has not been found with the vehicle, or anywhere else as of yet,” he continued.

Fire Chief Michael Phillips of the Marble Falls Volunteer Fire Department went missing early Saturday after being swept away by floodwaters while responding to a call in Cow Creek in Travis County, Texas. (Credit: Cocke County Emergency Management Agency)

Authorities noted that some methods of search—such as horseback or ATV patrols—are currently not viable due to hazardous conditions. Numerous low-water crossings and bridges remain in need of repair before emergency teams can fully access all affected locations.

According to his Facebook profile, Phillips has served as a volunteer fire chief since 1995.

Fox News Digital reached out to the Marble Falls Fire Department and the Burnet County Sheriff’s Office, but did not immediately receive a response. 

On Monday, the White House said at least 91 people were killed in central Texas in flash flooding that began early on the morning of the Fourth of July.

The National Weather Service also issued multiple Flash Flood Warnings on Monday for counties in central Texas.

Stepheny Price is a writer for Fox News Digital and Fox Business. She covers topics including missing persons, homicides, national crime cases, illegal immigration, and more. Story tips and ideas can be sent to stepheny.price@fox.com