A fire set at a Tesla electric vehicle charging station in eastern Massachusetts was believed to have been set intentionally, according to investigators.

Littleton police and firefighters were called to the Tesla Supercharger at about 1 a.m. Monday after a neighbor saw a fire burning at the station.

Police in Massachusetts say seven Tesla charging stations were intentionally set on fire and the incident is being investigated as suspicious."At this point it does appear that it was a set fire," said Littleton Fire Chief Steele McCurdy.