SINGAPORE - A Singaporean woman and her four children are among the foreigners seeking evacuation from Aden, Yemen, as fighting between Iranian-backed Houthi militia and a Saudi-led coalition continue to escalate.

Madam Sherin Fathima Syed Abdul Ravoof, 37, and her four children, aged between four and 13, are stuck in the seaport city, after being unable to board a ship that was due to set sail on Wednesday, The New Paper reported.

Madam Sherin is married to a Yemeni national, Mr Ramzy Kaid, 37, and she and her children moved to Aden six months ago.

Her husband went to Saudi Arabia about two weeks ago on a pilgrimage, before the unrest started and has since been unable to return.

Madam Sherin's brother, Mohamed Nasirudheen Syed, 36, who is in Singapore, said the fighting has not yet reached the suburb where his sister lives.

"They can hear gunshots and see from far missiles going off," the finance manager told The Straits Times over the phone.

He said that Singapore's Ministry of Foreign Affairs (MFA) is currently working with the Indian authorities to get her on an Indian vessel out of Aden.

Both China and India have sent navy vessels to evacuate their citizens from Yemen in the past few days, as the unrest worsened.

"They are still okay, and they have enough rations which should last them for about a week," Mr Nasirudheen added.

An MFA spokesman said: "We are deeply concerned about the deteriorating security situation in Yemen. We have been in close contact with the Singaporeans there, especially those who want to leave the country.

"As we have no diplomatic representation in Yemen, we are working closely with the Malaysian and Indonesian embassies to assist our nationals to leave the country," the spokesman added.