Heavy rains lashed Mumbai, slowing traffic and affecting train services. The IMD has issued an 'Orange' alert, advising citizens to stay indoors.
The police arrested the accused on Thursday and booked him under relevant sections of the Bharatiya Nyaya Sanhita and the Protection of Children from Sexual Offences Act, an official said.
The police said high grade explosive material was used in the blasts but the exact nature of the explosives was yet to be established