According to tweets from Emergency in SF, a San Francisco Fire truck was involved in a traffic accident en route to the scene of another accident at 4th and Townsend in SoMa this afternoon. As our tipster reports, there were no injuries in the incident with the fire truck, but no word yet on the accident that prompted the SFFD response in the first place.

As usual, we'll update this one we know more.

[@EmergencyinSF]