Natarajan was admitted to the hospital on Saturday with severe chest infection and was put on ventilator support.
AIADMK leaders and supporters pay homage to J Jayalithaa on her 5th death anniversary.
M Natarajan, husband of Sasikala, close aide of Tamil Nadu Chief Minister Jayalalithaa, was arrested on Monday after he was picked up from Courtallam in Tirunelveli district following a complaint from martial arts expert and sculptor Shihah Husseini that he was threatened by him, police said.
Sasikala has applied for a 15-day parole to meet her ailing husband M Natarajan, who is awaiting a liver transplant.
O Panneerselvam should not be surprised if the current controversy that he has kicked off is used to rid him of the party coordinator's post, points out N Sathiya Moorthy.
There is nothing to suggest that the DMK stands to gain from the AIADMK split nor is there anything indicative of an extraordinary advantage for the BJP, independently or in the company of the AIADMK, explains N Sathiya Moorthy.
The jailed All India Anna Dravida Munnetra Kazhagam leader had applied for 15-day parole on Monday, seeking temporary release to attend to her ailing husband, M Natarajan, 74, who is in the liver intensive care unit of a corporate hospital.
In a surprise move, All India Anna Dravida Munnetra Kazhagam supremo Jayalalithaa on Monday expelled her close aide V K Sasikala and her husband M Natarajan, besides 10 others from the party's primary membership.
Jayalalithaa and Sasikala have made peace after a three-month tiff and though her return may not have any political repercussions, it will impact the government.
The husband of Tamil Nadu Chief Minister Jayalalithaa's estranged aide Sasikala was arrested on Saturday in a land grabbing case, said the police. A team of police from Thanjavur arrested M Natarajan and took him to that town. He was arrested on a complaint filed by a person from a village near Thanjavur.
The organisation has now turned to universities to tap talent at an early stage and wants the students to commit at least three years for research with defence laboratories.
The DRDO has clearly decided that developing technologies is at least as important as developing weapons systems. V K Aatre, DRDO chief from 2000-04, had said, "Weapons programmes and technologies have to maintain equal pace." Only now is the DRDO heeding his advice.
The first launch of the missile last year was a failure.
Defence Research and Development Organisation scientists have traced the possible fault that caused the failure of the first test of Agni-III missile on July 9 and are addressing it, DRDO Director General M Natarajan said.
Standard Chartered Bank on Monday announced key changes in the top management of its global positions.
Highly placed sources said the test firing could take place any time this month.
Sasikala left Chennai on Thursday morning by a car which had to halt at several locations till it reached the Bengaluru highway as party cadres gathered to greet her.
It was the naval version of Prithvi, which has a range of 250 to 300 km.
The AIADMK leader had sought parole for 15 days, but she has been granted for five days.
The revived factionalism in the AIADMK, if not curbed now, has the potential to split the party vertically, warns N Sathiya Moorthy.
Days after its inauguration, officials on Wednesday demolished the compound wall and removed a park at the Mullivaaikal Memorial, built in honour of Tamil martyrs in the war in Sri Lanka, alleging that these were constructed on encroached highway land, triggering instant protests by pro-Eelam activists.
What will a split in the AIADMK mean for Tamil Nadu?
For Prime Minister Narendra Modi to dig up the perceived past of the DMK rival, now under a new leader in M K Stalin, may not gel with the voters, both old and new. If they are still going to vote for the AIADMK-BJP combine, it will be for entirely different reasons, and despite Modi's poll speeches, says N Sathiya Moorthy.
Dinakaran has been re-inducted and elevated to the position of deputy general secretary.
Justice G Jayachandran said there is ample evidence placed before the court by the prosecution to show that these accused were involved in cheating the government by producing forged documents.
She visited her husband M Natarajan, who underwent liver and kidney transplantation at a hospital in Chennai, on all five days of her parole period.
The AIADMK leader's car briefly halted in front of a Ganesha temple in Kotturpuram and she prayed from inside the vehicle as used to be done by Jaya.
The chief minister may have Prime Minister Modi's backing.
He said his faction will formally file a petition with the Election Commission of India on Friday.
At 70, going by hospital records made public, most age and health-related arguments put out against super-star Rajinikanth's entry into politics, before he withdrew citing a 2016 kidney-transplant, hold good for Sasikala, too, says N Sathiya Moorthy.
Dinakaran, who was expelled from the AIADMK in 2011, was re-inducted into the party last month by Sasikala after he expressed regret for his alleged anti-party activities.
A look at the financials of some of the key companies in the Sasikala clan's business empire.
For V K Sasikala, election as the All India Anna Dravida Munnetra Kazhagam legislature party leader to pave her way to become the chief minister, marks continuance of the legacy of late Jayalalithaa who also held the two posts, allowing her to wield complete control over the party and the government.
Whenever they are announced, the bypolls to 20 assembly seats in Tamil Nadu will be a mini referendum on the state government's performance. It will also be a do-or-die battle for the ruling AIADMK, opposition DMK, as well as the rebel AMMK, says N Sathiya Moorthy.
The searches at the Tamil television channel were conducted over alleged tax evasion.
Sasikala's name is doing the rounds for the general secretary's job, but it is one thing for Sasikala to acquire power under Jayalalithaa's wing and quite another when the CM is somebody else, says Aditi Phadnis.
'In the hands of a majoritarian government, with utter contempt for the cultural plurality and diversity of our great nation, the pipe dream of making Hindi the sole official language takes on nightmarish proportions.'
Despite the BJP's displeasure over Sasikala's elevation as AIADMK general secretary, the Dravidian party has sent a message to the Modi government that it will not be cowed down, says N Sathiya Moorthy.
In the post Jayalalithaa Tamil Nadu, Sasikala is the person to be watched in the coming days, weeks and months, writes R Ramasubramanian.
As the dust finally settles on the outcome of the Lok Sabha elections 2019 and Bharatiya Janata Party along with its NDA allies emerges as the clear winner, here is a list of who won in each of the 7 phases of elections.