"All Indian nationals are once again advised to leave Yemen, given the prevailing security situation," a Ministry of External Affairs advisory said.
It asked Indian nationals to urgently approach the Indian Mission in Sana`a for any assistance that may be needed.
Officials were concerned that not even a dozen Indians had availed of Indian Embassy`s help in the past few days and actually left Yemen.
"Ministry has advised Indian nationals in Yemen to leave the country by available commercial means," the MEA said.
The ministry advised Indian nationals to "urgently approach" the Indian mission in Sana`a on the helplines: +967 711 880 938 (round-the-clock local calls only); +967 734 000 657 (round-the-clock all calls).
They can also fax at +967 1433 630 or write an email to: helpline@eoisanaa.com and mailto:helpline@eoisanaa.com.
These arrangements will be in effect till June 11.
In separate advisories issued on May 27 and June 5, Indian nationals were also advised that till they exit they should not venture out of homes except under absolutely unavoidable circumstances.
Clashes have killed 19 people, including three children, in two Yemeni provinces, signaling no respite to the violence in the poor Arab nation shaken by months of unrest.