A Boston Post Road restaurant established in 1930 will be closed for at least a week after a kitchen fire on Saturday, authorities said.   “Unfortunately, all of the food in the restaurant has to be destroyed,” said Houghton. “It’s safe to say the restaurant will have to be closed for at least a week.”

The fire department went to the Coach Grill around 1:30 p.m. for a report of fire showing from the building. Upon arrival, the department called for a second alarm, with Weston and Sudbury Fire departments assisting at the scene. The Natick and Lincoln Fire departments covered the stations, the chief said.

The fire was traced to a refrigeration unit in the kitchen, the chief said. The restaurant’s sprinkler system activated. The restaurant, which serves dinner and Sunday brunch, was closed at the time of the fire. No one was injured.

“With it being closed, there were no cars in the parking lot, so we were able to use the parking lot for all of the apparatus,” Houghton said.

The cause of the fire is not known and being investigated by the state fire marshal’s office.

“It’s not suspicious by any means, but because it is such a significant dollar loss, we want to make sure to get the exact cause pinpointed,” Houghton said..