US electric vehicle maker Tesla Inc. said it has sent a team to investigate a video on Chinese social media that showed a parked Tesla Model S exploding, the latest in a string of fire incidents involving its cars.

The video, time-stamped Sunday evening and widely shared on China’s Twitter-like Weibo, shows the parked EV emit smoke and burst into flames seconds later. A video purportedly of the aftermath showed a line of three cars destroyed.

Shares of Tesla were down less than 2 percent at $268.5 in trading before the bell.

Reuters was not immediately able to verify the origins of the videos, which Weibo users said were taken in Shanghai.

The cause of the explosion could not immediately be ascertained from the videos.

“We immediately sent a team on site and we’re supporting local authorities to establish the facts. From what we know now, no one was harmed,” Tesla said in a statement Monday.

It declined further comment when contacted by Reuters.