SHANGHAI — The electric-car maker Tesla said on Monday that it had sent a team to investigate why one of its cars appeared to spontaneously combust in Shanghai over the weekend, an incident that the authorities said had left no one hurt but that has raised fresh questions about the safety of the company’s cars.

The explosion occurred Sunday evening in the basement parking garage of an apartment complex in Shanghai’s Xuhui District, according to a post by the local fire department on the Chinese social media platform Weibo.

Security camera footage accompanying the post showed smoke creeping from beneath a parked Tesla sedan for a few seconds before the car bursts into flames. Two other cars were also damaged, the fire department said.

“Last night we dispatched a team at once to the scene,” Tesla said in a Monday morning post on its Weibo account. The fire department said the cause of the explosion was still being investigated.