Three blasts rocked central Mumbai Wednesday evening , two in South Mumbai at Opera House and in Zaveri Bazar and one at Dadar West, Press trust of India(PTI ) reported. Reports said a teast ten people had died in the Dadar blast, four in the Zaveri Bazaar blast. The Home Ministry has confirmed a terrorist attack and Mumbai is on high alert. All blasts took place during rush hour and in crowded places. Eyewitnesses said about 100 people have been taken to hospital in Zaveri Bazar. One explosion, in a car at a bus stop in Dadar West, has been confirmed. A police officer said there might have been an explosive in a meter box behind a hoarding at Khau gali, a street filled with eateries at Zaveri Bazaar. An unexploded bomb has also reportedly been found in Dadar and a bomb disposal squad is working to defuse it. A National Investigation Agency (NIA) team has rushed to Mumbai from Delhi to investigate and collect forensic evidence. The police have appealed for calm.