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.

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.

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.

Tesla shares rose 2% on Monday after Morgan Stanley reinstated the electric-vehicle maker as its top U.S. auto pick, saying the company's artificial intelligence and robotics efforts could power growth even as the mainstay car business stumbles.

Morgan Stanley analyst Adam Jonas has backed struggling electric vehicle maker Tesla (TSLA) and indicated the stock could have as much as 50%

Key Takeaways Tesla was named the "Top Pick" for U.S. auto firms by Morgan Stanley, which pointed to the EV maker's moves into AI and robotics.Morgan Stanley has an "overweight" rating and $430 price target for Tesla.