Two subway trains collided in Shanghai on Tuesday, the Shanghai Metro said on its Twitter-like Weibo online account, without giving details as to whether there were any casualties.

It said one of its trains suffered equipment failure at 2:10 p.m. local time (0610 GMT), which then led station officers to manually direct approaching trains.

The collision then occurred near the Yu Yuan station at 2:51 p.m., according to online statements posted by the Shanghai Metro on its verified Weibo account.

State news agency Xinhua said some passengers were injured and photos posted on, China's microblogging site, showed several passengers bleeding and firefighters entering the train to rescue the injured.

In July, 40 people were killed after two bullet trains crashed in Wenzhou in eastern China, triggering public fury and raising question marks over technology promoted as a symbol of the nation's growing prowess.