"According to reports from the Mumbai Police, 17 persons have died and another 133 persons are injured," the ministry said in its latest update posted on the government's information website Thursday morning.

It added that the figures remained "subject to change".

The ministry had given an earlier toll of 21 dead.

The three bomb blasts that ripped through crowded areas of India's commercial capital on Wednesday evening were the deadliest attack on Indian soil since the 2008 assault on Mumbai by militant gunmen that left 166 dead.