Northwestern Pennsylvania fire officials say fog being made for a music video prompted a restaurant to report a fire.

The video was being shot Saturday afternoon at a teen dance club in the basement of a 19th century building in Jamestown. A restaurant on the third floor was hosting a 70th wedding anniversary party for a couple in their 90s.

Jamestown Assistant Fire Chief Tom Luckock says people at the restaurant called the fire department when the manmade fog filled the building. Firefighters determined it was innocuous.

The businesses are located about 75 miles northwest of Pittsburgh in a building called Mark Twain Manor. The building is named for Twain because he was friends with the physician who constructed the home in the mid-1800s.