Here is the press release by India Against Corruption.
7:00 pm: Haryana govt says allegations are baseless
Haryana Chief Minister Bhupinder Hooda has rejected all the allegations made by Kejriwal and said that they were baseless.
Law Minister Salman Khurshid had also come out in defence of Vadra.
"Mr Kejriwal should present proof of these allegations," he said.
DLF meanwhile has reportedly issued a statement, not surprisingly, denying the allegations. Here's what they have reportedly said:
Business relationship with Robert Vadra completely transparent: DLF statement on Arvind Kejriwal's allegations
— NDTV (@ndtv) अक्टूबर 5, 2012
6:45 pm : Prashant Bhushan says he wants SIT to investigate case
The Supreme Court lawyer said that there was an obvious case against Vadra which needs to be investigated by authorities.
"It's not a question of getting an unsecured loan but its also about him acquiring Rs 300 crore worth property from the same business house," Bhushan said in an exclusive interview to CNN-IBN.
"We have pointed out that DLF has got vast tracts of land from the Congress govts in Haryana and Ldehi which they ought not to have received....The land was given quite illegally to DLF," he said.
All these favours are being given to DLF in these various states, Vadra happens to be son-in-law of powerful family so doesn't that need to be investigated, he said.
"He himself does not have any business from which he has any income...Six companies he has registered in 2012 and why he needs 12 companies that seem to do nothing but just acquire properties from DLF," Bhushan said.
These are unusual companies being bestowed favours by DLF, he said.
"The quid pro quo is evident, the chain of circumstantial evidence is fairly complete. It needs to be investigated further," the lawyer said.
The government should appoint an SIT headed by three former Supreme Court judges to probe the issue, he said.
6:15 pm: Rajiv Shukla says Vadra's deal did not involve government in any way
It is a deal between two private inidividuals and everybody is doing that, he said.
"I don't think there is any substance in the allegations...it is the handiwork of the BJP," Shukla said.
6:00 pm: Kejriwal has questioned how Vadra received the funds from DLF
Firstpost's Danish Raza who was at the press conference says that according to the document released by Kejriwal, with share capital of Rs 50 lakh, five companies created by Vadera acquired companies worth more than Rs 300 crore during 2007-2010.
"The ostensible seed money for this acquisition is shown to have come from unsecured interest free loans from DLF Ltd (over Rs 65 crore). The bulk of the properties are also purchased from DLF at a price is shown far below the market price," said the document.
And here's a Economic Times report in which Vadra's entry into the real estate with DLF is documented.
5:50 pm: Kejriwal says he has no proof the 'scam' extends to Sonia, Priyanka
From the evidence available, it is very clear that Vadra had given favours to the real estate firm but it was not possible to know yet what they were and should be investigated, Kejriwal said.
"He sets up six companies in three years..if you raise the corporate veil Rs 300 crore of properties have been transferred to Vadra and the question is why DLF has done it when it was not doing so well itself," he said.
Vadra's wealth did not rise, the amounts just went from one company to an individual, he said
When asked if he believed Sonia Gandhi or Priyanka Gandhi were also involved in the matter, Kejriwal said, "I have no evidence of anyone else being involved so I would not like to name anyone else. I would not like to name any other party."
5:40 pm: Congress alleges defamation, BJP says probe needed
Congress spokesperson Rashid Alvi, has stepped into dangerous territory and said the anti-corruption activists' allegations against Vadra were baseless.
"They just want to defame him," he said.
Congress leader Sandeep Dikshit alleges it is old information that has been rehashed by Kejriwal for sensationalism.
"I think it is most unfair to drag a person not connected with politics into something like this....I think these are just wild allegations,"Dikshit said.
I think these days there's an environment where any property owned by politicians or their relatives is assumed to be ill-gotten which is wrong, he said.
Dikshit said that making allegations against private individuals was not the right way for Kejriwal to begin his political innings and he should have verified the allegations, before using them in a sensational manner.
However, BJP Mukhtar Abbas Naqvi says it is not the source of the scam, but what has been said that counts.
"There has been a revealation and the concession that has been given is because of Sonia Gandhi. There should be a proper mechanism for the investigation to be carried out," he said.
He alleges that the first family has become the "worst family" and says 10 Janpath has become the epicentre of corruption in the country.
"The Congress is running the country like a mafia," he said.
5:25 pm: Did Congress government in Haryana provide some benefit to DLF?
"Congress government is in Haryana and has given DLF some benefit. Now whether DLF has given them in return something in the form of cash or some other benefits needs to be probed," Bhushan said.
If the damaad gets so much benefit, then it must be inquired into, he said.
The Income Tax department should already know about this and should already been inquiring into it, Bhushan said.
"It is very clear that the manner in which the country is working no agency will have the courage to question the honesty for such a powerful person," he said.
They alleged a case violating conditions of the Prevention of Corruption Act and Income Tax Act could be made out against Vadra and should be investigated at the earliest.
This is one of those blows that goes just below the belt and hits where it hurts for the Congress party. Will they attempt to defend the Congress president's son in law? And more importantly are any political ambitions harboured by Vadra effectively nipped in the bud?
5:20 pm: Is this the beginning of the 'Robert Vadra scam'?
"Robert Vadra and his mother have participated in a big scam and the government has been trying to divert attention from scams...this scam will be called the Robert Vadra scam," veteran lawyer Shanti Bhushan said.
In all six companies there has been no activity for years, Kejriwal pointed out.
"Vadra got seven flats in the project by DLF ....the entire transactions were done to give Vadra the amount of Rs 300 crore," he said.
The inquiry in this matter will not be conducted, we already know this, the anti-corruption activist said. He also asked the public to send documents proving scams by other leaders.
"When you give flats worth Rs 35 crore for Rs 5 crore then it must be assumed there is something afoot," he said.
5:15 pm: Bhushan says that Vadra took money from DLF to buy its properties
"Robert Vadhera got 10,000 sq foot penthouse in DLF Aralia for Rs. 85 lakhs whose market value when sold was 25 crores and today it's value is 40 crores," Prashant Bhushan told the press conference.
"Why did the DLF give so much money to Vadra without any obvious benefit?" the eminent lawyer questioned.
Vadra was getting benefits for the DLF company through the Delhi government and Haryana government, he said, adding that it should be probed by investigating agencies.
"We have received all our information from RoC...There are many other properties to be inquired into," Bhushan said.
He questioned how Vadra could take money from DLF to buy properties from the company.
"Hum iss desh ke damaad hain isi liye kuch bhi kar sakte hain? (I am the son-in-law of the country so I can get away with anything)" Bhushan said, adding that the Congress party should answer these allegations.
5:00 pm: Kejriwal targets Vadra
Kejriwal says the person that they have evidence of corruption against Robert Vadra.
According to Kejriwal, they have evidence to show that Vadra received kickbacks from DLF and says that his income rose from Rs 50 lakh to a whopping 300 crore thanks to land allotments.
"DLF gave money to Vadra without charging any interest," he said.
Arvind Kejriwal, while announcing his entry into politics had also promised 'to expose' the activities of a prominent figure in Indian politics.