Shanghai's Oriental Pearl Tower, a building that has become a symbol of China's financial center, caught fire early Tuesday.<br /><br />Flames could be seen near the large television antenna at the top of the over 1,500 foot high tower.<br /><br />The cause of the blaze is not known.<br /><br />Local television reports it may have been caused by a lightning strike. No casualties have been reported.<br /><br />The tower is located at the tip of Lujiazui and sits close by the Huangpu River.