The agency has found fresh evidence in the 39-years old riots case making it necessary to have the voice sample of Tytler, they said.
The agency has booked Sisodia, a 1992-batch IRS officer Sukesh Kumar Jain who was then secretary of vigilance, retired CISF DIG Rakesh Kumar Sinha who was working as special advisor to Chief Minister Arvind Kejriwal and joint director in the Feedback Unit, they said.
On Monday, Kejriwal, 55, skipped the seventh summons issued to him in the case, saying he would appear before the agency if a court ordered him to do so.
Central Bureau of Investigation has said that the Central agency is likely to question former Bihar chief minister and Union Railway minister Lalu Prasad Yadav in connection with the land-for-job case.
Sisodia went to his party office in the morning from where he proceeded to Rajghat. A large number of his supporters gathered outside his residence ahead of his questioning.
Seven TMC MLAs within the Krishnanagar Lok Sabha constituency of party MP Mahua Moitra have written to Trinamool Congress supremo Mamata Banerjee demanding her removal as Nadia Uttar organisational district president. The lawmakers allege that Moitra has been ignoring Assembly representatives while undertaking party programmes and indulging anti-social elements, causing significant damage to the party's image. The MP has responded by dismissing the complaint as "district-level rubbish."
Both the central agencies had recently initiated action in the case, with the CBI questioning Lalu Prasad and his wife and former Bihar chief minister Rabri Devi and the ED carrying out raids against the RJD chief's family.
The bench said most of the allegations in the corruption case registered by the CBI against Sisodia were "hearsay", based on the statements made by approvers and would not pass scrutiny before the trial court without any concrete material.
The CBI refuted Sisodia's claims as 'mischievous and misleading', saying his statements were is 'an attempt to divert attention from the ongoing investigation in Delhi Excise Policy case'.
Special Judge M K Nagpal fixed May 12 for consideration of the charge sheet after the CBI submitted that the prosecution sanction against Sisodia has already been procured from the competent authorities.
The assistant director of the vigilance department had filed a written request before a special court, seeking two months' time to study the 'lacunae and discrepancies' in the CBI's closure report in the case to file an appropriate protest petition before it.
The Delhi high court on Friday sought the Enforcement Directorate's stand on a plea by Aam Aadmi Party leader Sanjay Singh against his arrest in a money laundering case related to alleged irregularities in the now-scrapped Delhi excise policy.
The panel said that vacant posts in the CBI are not being filled up at the required pace and recommended that "every effort should be made to fill up vacancies at the earliest".
Aam Aadmi Party leader Manish Sisodia, arrested in the Delhi excise policy case in February last year, on Tuesday told a Delhi court hearing his bail petition that no purpose will be served by keeping him in jail any further.
Sources in the Special Cell said that now arrests are likely to follow across the country.
As opposition leaders like the Congress president Mallikarjun Kharge and Janata Dal-United supremo and Bihar Chief Minister Nitish Kumar expressed solidarity with Kejriwal on Saturday and renewed calls to speed up opposition unity efforts to take on the BJP, officials said the CBI may ask the AAP chief about the policy formulation process, especially of the "untraceable" file which was earlier slated to be put before the Delhi Council of Ministers.
Singh alleged that the BJP was attempting to "defame" Delhi CM, claiming that all attempts to bring a bad name to Kejriwal and his party will fail.
According to a state government order issued on August 30, prior consent of Telangana is required for the central probe agency on a case-to-case basis to investigate in the state.
A day after the Aam Aadmi Party claimed that Delhi Chief Minister Arvind Kejriwal had lost 8.5 kg in prison, Tihar jail sources on Monday said he had only lost 2 kg and he was being regularly monitored by a medical board of AIIMS.
The Central Bureau of Investigation had booked Shubham Shokeen and another former employee Aarti Mandal in the case on the basis of a complaint from the French embassy.
From the time he first rose to prominence during the movement against the then UPA government, Arvind Kejriwal has regularly grabbed headlines for his surprise moves and decisions. Here are 10 such instances.
Around 25 buses carrying Trinamool Congress volunteers set out from Kolkata on Saturday for the planned protest programme in Delhi on October 3 against the alleged withholding of funds by the Centre, party leaders said.
Normally, it is required by the CBI to complete an investigation within one year of registration of a case.
Every single day counts in matters concerning the liberty of citizens, the Supreme Court said on Friday while asking the Delhi high court to decide on the regular bail plea of a businessman in a corruption case related to the now scrapped Delhi excise policy.
Firecrackers were burst outside the CM's residence after his release from the Tihar Jail on Friday evening. The Aam Aadmi Party workers had gathered to welcome their leader.
Arvind Kejriwal's wife Sunita congratulated the Aam Aadmi Party and wished for the release of other leaders lodged in Tihar jail.
This comes after the agency conducted searches at his residence earlier in the day in connection with the case.
Senior Indian Police Service (IPS) officer Praveen Sood took over as the new Central Bureau of Investigation (CBI) director on Thursday and he will be in the post for two years, officials said.
Kejriwal said that it has been alleged that a bribe of Rs 100 crore was taken, but he asked where was the money.
Delhi Deputy Chief Minister Manish Sisodia has claimed that CBI officials will come to check his bank locker on Tuesday and said the agency sleuths will not find anything in it.
The apex court rejected the preliminary objection raised by the Central Bureau of Investigation (CBI) and the Enforcement Directorate (ED) that Aam Aadmi Party leader Manish Sisodia cannot be permitted to file second set of special leave petitions to challenge the Delhi high court's May 21 verdict which denied him bail in the excise policy cases.
The BJP-led Centre sent the CBI to conduct searches at Deputy Chief Minister Manish Sisodia's residence here just after the New York Times published a positive story in its front page about the Delhi model of education, AAP leaders said.
The court said his release may adversely impact the ongoing investigation and 'seriously hamper' its progress.
The Central Bureau of Investigation (CBI) began making submissions on Monday on its appeal before the Delhi high court challenging the acquittal of accused persons, including former telecom minister A Raja, and firms in the 2G spectrum allocation scam case in December 2017.
The high profile visit is taking place in the backdrop of Washington's allegations about an Indian link to a foiled plot to kill a Sikh separatist Gurpatwant Singh Pannun on the American soil.
Officials said the agency may ask the chief minister about the policy formulation process especially of the "untraceable" file which was earlier slated to be put before the Council of Ministers.
He has been appointed to the CBI director's post for a period of two years from the date of taking charge after Subodh Kumar Jaiswal completes his tenure on May 25, a government order said on Sunday.
A special CBI court on Monday remanded Delhi Deputy Chief Minister Manish Sisodia in five-day custody of the central probe agency till March 4, a day after his arrest in the excise scam case.
A bench of justices Sanjiv Khanna and Dipankar Datta referred to a larger bench, preferably of five judges, for in-depth consideration of three questions on the aspect of "need and necessity of arrest" under the Prevention of Money Laundering Act (PMLA).
The Central Bureau of Investigation (CBI) hand-delivered a summons to Trinamool Congress MP Abhishek Banerjee for questioning in connection with the teachers' recruitment scam case on Monday, allegedly over two hours after the Supreme Court had stayed a high court order for his interrogation.