About 200 people drowned in the Red Sea when a boat carrying migrants to Saudi Arabia sank off the Sudanese coast, Sudanese media say.

苏丹媒体报道，一艘载有移民驶向沙特的船只在红海海域沉没，大约200人溺水。

Only three people had been rescued, according to the Sudanese Media Centre, a state-linked news agency.

A fire broke out on board the boat, which was trying to smuggle¹ people to Saudi Arabia, the agency reported.

The boat had launched from Sudan's Red Sea State, carrying migrants from neighbouring countries, it said.

Most of those on board were from Chad, Nigeria, Somalia, and Eritrea, SMC reported, adding that efforts were continuing to find survivors².

Four Yemenis who allegedly owned the boat had been arrested in Port Sudan state, the report added.

Local authorities had foiled（阻止） an attempt to smuggle 247 other people across the sea, it said.

The Red Sea is a well-known trafficking route to Saudi Arabia and Yemen, says the BBC's James Copnall in Khartoum.

Thousands of migrants cross the Red Sea every year, but the journey is a dangerous one, adds our correspondent.

Last month, 150 people drowned when a ship carrying some 850 migrants fleeing the conflict in Libya capsized off Tunisia.