New Delhi: Prime Minister Narendra Modi raised "very strongly" the issue of the China-Pakistan economic corridor during his visit to Beijing and told them that it is "unacceptable", External Affairs Minister Sushma Swaraj said here on Sunday.

Answering queries at a press conference, she said the government had summoned the Chinese envoy over the $46 billion economic corridor that is to run through Pakistani Kashmir.

She said the Indian envoy in Beijing had also raised the issue. Chinese President Xi Jinping had announced the ambitious 3,000 km-long China-Pakistan Economic Corridor (CPEC) during his visit to Pakistan in April.

"Prime minster during his visit took up the issue very firmly and spoke very strongly that the CPEC going through PoK (Pakistan-occupied Kashmir) is unacceptable," she said.