Two other militants were arrested from the encounter scene, the sources added.
Police said the border has not been sealed but they are checking all vehicles entering the national capital.
Kovind, the 71-year-old BJP veteran, who rose from a modest background is set to occupy the country's highest constitutional office.
The EC cited Section 8(1)(g) of the RTI Act exempting the disclosure of information which would endanger the life or physical safety of any person or identify the source of information or assistance given in confidence for law enforcement or security purposes.
A Delhi Police head constable, Ratan Lal, was among the nine killed in the violence that erupted on Monday over the amended citizenship law.
Shaking Delhi's spirit and soul, an unimaginable tragedy is unfolding at New Delhi's crematoriums struggling to cope with the deluge of the dead arriving at frightening pace.
They are marching towards Delhi as part of the Bharatiya Kisan Union's protest call over demands ranging from farm loan waiver to cut in fuel prices
Three more positive cases of novel coronavirus have been reported in India.
A five-judge Bench of Justices NV Ramana, Arun Mishra, RF Nariman, R Banumathi and Ashok Bhushan heard the petition filed by Vinay Sharma and Mukesh Singh. The duo had moved a curative petition in the top court after a Delhi court issued death warrants in their names for their hanging on January 22.
The SP said the protesters also pelted stones, injuring four jawans, adding that police had to lob tear gas shells to disperse the crowd.
The overall Air Quality Index was recorded at 231 on Sunday which falls in 'poor' category.
This was the first major election in the country amid the COVID-19 pandemic. Obviously, the women of Bihar were not intimidated by the pandemic and came out in large numbers to vote.
The school management also removed all the security staffs.
Hospital authorities said of the deceased at the GTB, at least nine received gun shots. One of the deceased is also a woman, they said.
'Here was a man who played a major part in helping the Bengalis of East Pakistan create a new nation, secured the merger of Sikkim into the Indian dominion and built R&AW into a formidable outfit, comparable to the best in the world.' Rameshwar Nath Kao shunned the limelight, hated to be photographed and preferred to work behind the scenes. A revealing excerpt from Nitin A Gokhale's much awaited book, R N Kao: Gentleman Spymaster.
After garnering 28 seats in an impressive debut, the Aam Admi Party came close to scripting a political history by finishing second in 20 of the 70-seat Assembly, losing some of them with only a narrow margin.
Large number of locals were seen queuing up at the ticket counters.
Taking exception to Health Minister Harsh Vardhan not mentioning the death of healthcare workers due to Covid-19 in his statement in Parliament, the Indian Medical Association has published a list of 382 doctors who died due to the viral disease and demanded that they be treated as "martyrs".
All international passengers will henceforth be screened at airports, Health Minister Harsh Vardhan said at a press conference. Earlier, travellers from only 12 countries were screened at airports for the disease that has claimed over 3,000 lives and infected more than 90,000 worldwide.
National Demorcatic Alliance ministry's list of assets is fairly wide -- from land and property to vehicles and, for quite a few, guns. Nivedita Mookerji reports
Why has Lalu Prasad picked his youngest child, Tejashwi Yadav, as his political heir.
Enormous debt isn't the only thing afflicting Air India. Its work culture is an equal culprit in its downfall.