"President Kalam has condemned the blasts and condoled the death of 12 persons who were killed in the incident. He has also wished a speedy recovery for the persons injured," S M Khan, press secretary to the President said.

Blasts rock Varanasi

Meanwhile the Delhi police have tightened the security cover around all the major temples and other religious places in the city.

"We have put our forces on high alert and adequate security cover would be provided to all the religious places including the temples," said a senior Delhi police official.

Amongst the places whose security cover has be enhanced include Laxmi Narain Mandir also known as Birla Mandir, Swami Narain Temple.