Indian Foreign Minister Pranab Mukherjee is due to visit Islamabad in a week's time to review a four-year-old peace process between the two nations.
Only in the last week, Indian soldiers came under heavy cross-border fire trying to stop armed men from sneaking into its part of Kashmir. Later eight people were killed in clashes in a Kashmir village. It was some of the worse violence in Kashmir this year.
But police in Jaipur said they did not know who was behind Tuesday's bombings.
"It is too early to name one particular group and we are analyzing the material used to cause the blast to determine what it exactly contained," A.S. Gill, Rajasthan's police chief said.
Authorities said they do not have information about any foreigners injured in the blast. It is low season in the tourist state of Rajasthan.
BLOOD DONATIONS
On Wednesday, hundreds of volunteers queued up in hospitals to donate blood for survivors.
Inside Jaipur's main hospital, women and children writhed in pain as doctors bandaged their head or badly injured arms.
Others thronged the mortuary at the back of the hospital to try and get bodies of their relatives out as quickly as possible.
"This is an endless wait, I don't know when I can get my brother's body out of here," Rakesh Sharma, a businessman said.
In the past few years, bomb blasts in Indian cities have killed hundreds of people. The deadliest was in July 2006, when seven bombs exploded on Mumbai's railway system killing more than 180 people.
Last August, three bombs killed 38 people at an amusement park and a street-side food stall in Hyderabad, a city in southern India which is home to a booming outsourcing industry.
