In its comment on the proposal of the Department of Industrial Policy and Promotion (DIPP), the Home Ministry said Chinese investments in such a sensitive sector should be viewed with caution, sources said.
The Home Ministry, they said, has pointed out that China is India's main rival on the economic and military fronts, with unresolved border disputes between the two nations.
The ministry clearly stated that Chinese investments should not be allowed in border areas such as Jammu & Kashmir, the North East and Sikkim.
It suggested the DIPP and the Ministry of Railways set up a core group with technical and security experts to evaluate proposals in the sector.
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The Department of Economic Affairs (DEA) has stated that the railway ministry should keep in mind the strategic and security sensitivity of remote locations while framing specific projects in those areas, they added.
However, existing passenger and freight network operations will not be opened to foreign investors.