India today strongly advised its nationals to avoid travelling in 'any circumstances, by any means, for any purpose' to war-torn Yemen, where an Indian nun has been killed and a priest abducted in recent attacks.

Asserting that the security situation in Yemen continues to remain fragile, the external affairs ministry in its advisory said, "In light of the recent terrorist attacks in Aden, which resulted in killing of an Indian nun and abduction of one priest, Indian nationals are again strongly advised to avoid travelling to Yemen under any circumstances by any means for any purpose till further notice."

The ministry also said that it had already issued number of travel advisories wherein Indian nationals have been advised to refrain from undertaking travel to Yemen in view of the precarious security situation in the country.

Tom Uzhunnalil, a priest from Kerala, was abducted by after the Islamic State militant group, which attacked a care home run by Mother Teresa's Missionaries of Charity.

Gunmen had stormed the refuge for the elderly earlier this month and killed a Yemeni guard before tying up and shooting 15 other employees. Four foreign nuns, including an Indian, working as nurses were among those killed.