Ahead of serial blasts in Ahmedabad, a raid was conducted at a residence in Navi Mumbai's Sanpada area following an allegedly threatening e-mail sent from a computer there.

"We are investigating whether the e-mail was sent from the residence. Presently, personal verifications of the person living there are being carried out and it would be too premature to comment on it," a senior official from the Anti Terrorism Squad (ATS) told PTI.

Around 16 co-ordinated serial blasts rocked the city of Ahmedabad on Saturday, killing 38 people and injuring 90.

The synchronised low intensity blasts took place a day after similar explosions rocked Bengaluru.