A double-decker tour bus caught on fire in San Francisco's popular Haight-Ashbury neighborhood on Sunday.
Social media users reported firefighters immediately responded, and there were no injuries.
Neither the San Francisco Fire Department nor the San Francisco Police Department returned requests for comment from BuzzFeed News about the fire.
The bus appeared to be a vehicle from Big Bus Tours.
Witnesses reported seeing the smoke blocks away from the incident.
This is a developing story. Check back for updates and follow BuzzFeed News on Twitter.