Rajasthan Chief Minister Vasundhara Raje on Tuesday condemned the serial blasts in Jaipur, which claimed 60 lives and said that it was a well designed conspiracy by the terrorists to disturb the peaceful atmosphere in the state.

Addressing a late night press conference, Raje said: "Never in the history of the state has such a heinous incident taken place and this is not an attack on the state but on the nation."

Raje asked all the political parties to come together and face the crisis.

Earlier, Prime Minister Manmohan Singh [Images] and Union Home Minister Shivraj Patil spoke to Raje and assured all possible help from the Centre.

Already a company of National Security Guards has arrived to assist the police, she said.

Appealing to the people to maintain peace, she said that Section 144 has been promulgated in the city and police vigil has been intensified.

She said investigation was going on and reports are expected on Wednesday, which would specify who were behind this heinous crime.

Raje also announced a state mourning on Wednesday and said: "All government offices, schools and colleges will be closed for a day as a mark of respect for all those killed in the serial blasts in the pink city."

Sixty people were killed and about 200 injured in eight near-simultaneous blasts in Jaipur on Tuesday night.