The Massachusetts State Fire Marshal's office says a fire at a bank of Tesla charging stations is believed to have been intentionally set and is being investigated as suspicious.

Upon arrival, firefighters saw seven chargers with heavy fire damage. After the Littleton Electric Light & Water Department cut power to the devices, they quickly extinguished the fire and notified the State Police Fire Investigation Unit assigned to the State Fire Marshal’s office.

Authorities are asking people to provide them with information regarding a case where a fire occurred at a Tesla charging station in Massachusetts, Monday.