While en route to one fire, Hopkinton engines were called to another this afternoon.

Firefighters were working an extensive brush fire on the west side of town when the department got a call for a chimney fire at Cornell’s pub, according to Hopkinton Fire Chief Ken Clark at the scene.

Flames were “about 4 or 5 feet in the air,” Clark said of the restaurant fire.

The fire started in the kitchen hood vent system and extended to the spaces between the ceiling and the roof, he said. It was confined to the area of origin, but the kitchen sustained “extensive damage.”

“They won’t be able to use the kitchen for a while,” Clark said.

Reporting to the Cornell’s fire were two Hopkinton engines, a rescue from Milford, an engine from Ashland and a ladder company from Westboro, Clark said.