Dozens more have been injured in the blasts.
One of the blasts occurred in a car park near the historic Gateway of India monument in the south of the city, according to police, which is a popular site for tourists.
The explosions shook buildings and telephone lines in the city were jammed as panicked residents called family and friends, the Associated Press news agency reported.
At least one other took place near the Mumba Devi temple in central Bombay.
Rajendra Darda, home minister of Maharashtra state, told AFP news agency: "Both the blasts occurred in the back seats of parked taxis."
Star Television reported that another bomb had exploded in the upmarket Marine Lines district. Other reports claim a fourth explosion at the Mumba Devi site.
It is not immediately clear who carried out the blasts.
Ultimi Articoli
Ilze Brands Kehris nominata rappresentante speciale dell’UE per i diritti umani
Milano, il progetto STEP per il lavoro di 250 giovani: presentazione il 20 ottobre
Cucina italiana ad Atene, la Lombardia partecipa con quindici consorzi
Youth and Future a Palazzo Reale: le parole dei giovani diventano opere d’arte
Fibra ottica in provincia di Como: 145 comuni nel Piano Bul, oltre 144.000 immobili attivabili
Leone, il neonato ritrovato a Cinisello Balsamo respira senza supporto
Gaza, dalla Lombardia altri 150mila euro per acqua e assistenza agli sfollati
Milano premia i suoi protagonisti: a Palazzo Marino otto “Volti della Metropoli” che raccontano il futuro della città
Premio Volti della Metropoli: a Palazzo Marino i riconoscimenti alla VI edizione
