Two helicopters of the People's Liberation Army of China hovered over Chamoli district on Saturday, triggering concern in India's security establishment about the People's Liberation Army's (PLA) fourth such incursion into Indian airspace since March this year.
"For the first time, a matter of airspace violation has taken place. We will 101 per cent raise this issue with China, but it has not been decided on how we will go about it," Swaraj said at a briefing in New Delhi.
The choppers were identified as the Zhiba series of attack helicopters.
The Indian Air Force (IAF) is probing the incident.
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However, the action was defended by China, which asserted that India and China have a territorial dispute in the eastern section of their boundary and the Chinese military carry out regular patrolling in the relevant areas.
While the details can be obtained from the Ministry of Defence, "in principle China and India have territorial disputes in the eastern section of the China-India border", Chinese Foreign Ministry spokesperson Hua Chunying told the media in Beijing.
Swaraj said whenever there is an incursion of land, they give a logic that borders have not been settled and this happens due to different perceptions of the border.
Asked about India's position on China's 'One Belt One Road', a mega unilateral connectivity project, Swaraj said, "We, in principle, agree with the concept of connectivity. When China had not conceptualised about OBOR, India had several such initiatives" and "India does not have any issue with (OBOR and CPEC) connectivity, but with its principles."
"These are some principles we put forth during OBOR. I am happy that when (OBOR) meet took place, several nations put forth the same concerns. Which is why I think China will be again compelled to rethink on this," she said.
She said China-Pakistan Economic Corridor (CPEC), which is part of OBOR, is directly related to India's sovereignty and territorial integrity.