A barn in the 5200 block of Tully Road, between Taylor and Barnhart roads, burned to the ground Friday afternoon.

A man working on a car heard a “boom” near where the fire started and went to a nearby house to call 911 at around 3:30 p.m. on Friday, said Keyes Fire Chief Robert Watt.

Hughson and Westport fire departments responded to the call, along with the Keyes Fire Department. The cause of the fire had yet to be determined by 4:30 p.m. on Friday.

“The best thing to do right now is let the barn burn,” Watt said. “The Department of Environmental Resources is coming out soon to look things over.”

A group of nearby residents gathered on Tully Road to watch the fire.

“The neighbor girl heard a ‘boom’ and she tried to put it out with a hose,” said Cindee Elsted. “This was the biggest barn for miles around. It was grandfather’s barn, George Stammerjohn.”

No one was injured in the fire.