New Delhi: India has rescued 58 Indian nurses from violence-hit Iraq in an "extremely difficult" operation, days after rescuing 46 Indian nurses who were in the control of the Sunni jihadists in Tikrit.

Indian external affairs ministry spokesperson Syed Akbaruddin said the 58 nurses were "brought out through the land route" in batches over the last three weeks. The rescue operation was undertaken in "extremely difficult circumstances.. through friends in Iraq", the spokesperson said. 39 Indian workers are still held captive in Mosul, the spokesperson said the government is working "at all levels" to ensure their release. He said the Indian government is working at the diplomatic level and at the ground level, but declined to reveal details.