At least 31 Somalis killed in raid off Yemen coast

* Refugees travelling towards Sudan
* UNHCR confirms deaths
* IOM aware of survivors brought to Hodeidah


Thirty-one Somali refugees were killed off the coast of Yemen late on Thursday when a helicopter attacked the boat they were travelling in, a local coast guard in the Houthi-controlled Hodeidah area said.
Coast guard Mohamed al-Alay told Reuters the refugees, carrying official UNHCR documents, were on their way from Yemen to Sudan when they were attacked by an Apache helicopter near the Bab al-Mandeb strait.
It was not immediately clear who carried out the attack.
UNHCR spokeswoman in Yemen, Shabia Mantoo, confirmed that a number of refugees were killed.
"We are distressed by this incident and understand that refugees were travelling in a vessel off the coast of Hodeidah which was reportedly impacted during the course of hostilities," she told Reuters by telephone.
Mantoo said that refugees and asylum seekers were moving out of Yemen and heading north because of deteriorating conditions.
A sailor who had been operating the boat, Ibrahim Ali Zeyad, said 80 refugees had been rescued.
The spokesman for the International Organization for Migration (IOM) told a media briefing in Geneva the number of deaths may be more than 31.
"We just got information of a helicopter assault on a boat leaving Yemen, we believe for Sudan, full of Somalis," Joel Millman said.
He added that they were aware of 80 survivors brought to hospitals in Hodeidah.
The spokesperson for the Saudi-led coalition, General Ahmed al-Asseri, said they did not conduct any operations or have any engagement in the Hodeidah area on Thursday.
He said Hodeidah remained under the control of the Houthis and the port continued to be used for "trafficking people, smuggling weapons and attacks against the line of communications in the Red Sea."
Hodeidah on the Red Sea is controlled by Iran-allied Houthi fighters who in 2014 overran Yemen's capital Sanaa and forced the Saudi-backed government of President Abd-Rabbu Mansour Hadi to flee into exile.
A Saudi-led coalition was formed in 2015 to fight the Houthis and troops loyal to former President Ali Abdullah Saleh who have fired missiles into neighbouring Saudi Arabia.
The Bab al-Mandeb is a strategic waterway at the foot of the Red Sea through which nearly 4 million barrels of oil are shipped daily to Europe, the United States and Asia.